diff --git a/packages/kbn-optimizer/src/integration_tests/__snapshots__/basic_optimization.test.ts.snap b/packages/kbn-optimizer/src/integration_tests/__snapshots__/basic_optimization.test.ts.snap
index 1466865df8d98..211cfac3806ad 100644
--- a/packages/kbn-optimizer/src/integration_tests/__snapshots__/basic_optimization.test.ts.snap
+++ b/packages/kbn-optimizer/src/integration_tests/__snapshots__/basic_optimization.test.ts.snap
@@ -1,5 +1,71 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`builds expected bundles, saves bundle counts to metadata: OptimizerConfig 1`] = `
+OptimizerConfig {
+  "bundles": Array [
+    Bundle {
+      "cache": BundleCache {
+        "path": <absolute path>/packages/kbn-optimizer/src/__fixtures__/__tmp__/mock_repo/plugins/bar/target/public/.kbn-optimizer-cache,
+        "state": undefined,
+      },
+      "contextDir": <absolute path>/packages/kbn-optimizer/src/__fixtures__/__tmp__/mock_repo/plugins/bar,
+      "id": "bar",
+      "outputDir": <absolute path>/packages/kbn-optimizer/src/__fixtures__/__tmp__/mock_repo/plugins/bar/target/public,
+      "publicDirNames": Array [
+        "public",
+      ],
+      "sourceRoot": <absolute path>/packages/kbn-optimizer/src/__fixtures__/__tmp__/mock_repo,
+      "type": "plugin",
+    },
+    Bundle {
+      "cache": BundleCache {
+        "path": <absolute path>/packages/kbn-optimizer/src/__fixtures__/__tmp__/mock_repo/plugins/foo/target/public/.kbn-optimizer-cache,
+        "state": undefined,
+      },
+      "contextDir": <absolute path>/packages/kbn-optimizer/src/__fixtures__/__tmp__/mock_repo/plugins/foo,
+      "id": "foo",
+      "outputDir": <absolute path>/packages/kbn-optimizer/src/__fixtures__/__tmp__/mock_repo/plugins/foo/target/public,
+      "publicDirNames": Array [
+        "public",
+      ],
+      "sourceRoot": <absolute path>/packages/kbn-optimizer/src/__fixtures__/__tmp__/mock_repo,
+      "type": "plugin",
+    },
+  ],
+  "cache": true,
+  "dist": false,
+  "inspectWorkers": false,
+  "maxWorkerCount": 1,
+  "plugins": Array [
+    Object {
+      "directory": <absolute path>/packages/kbn-optimizer/src/__fixtures__/__tmp__/mock_repo/plugins/bar,
+      "extraPublicDirs": Array [],
+      "id": "bar",
+      "isUiPlugin": true,
+    },
+    Object {
+      "directory": <absolute path>/packages/kbn-optimizer/src/__fixtures__/__tmp__/mock_repo/plugins/foo,
+      "extraPublicDirs": Array [],
+      "id": "foo",
+      "isUiPlugin": true,
+    },
+    Object {
+      "directory": <absolute path>/packages/kbn-optimizer/src/__fixtures__/__tmp__/mock_repo/plugins/nested/baz,
+      "extraPublicDirs": Array [],
+      "id": "baz",
+      "isUiPlugin": false,
+    },
+  ],
+  "profileWebpack": false,
+  "repoRoot": <absolute path>/packages/kbn-optimizer/src/__fixtures__/__tmp__/mock_repo,
+  "themeTags": Array [
+    "v7dark",
+    "v7light",
+  ],
+  "watch": false,
+}
+`;
+
 exports[`prepares assets for distribution: bar bundle 1`] = `"(function(modules){var installedModules={};function __webpack_require__(moduleId){if(installedModules[moduleId]){return installedModules[moduleId].exports}var module=installedModules[moduleId]={i:moduleId,l:false,exports:{}};modules[moduleId].call(module.exports,module,module.exports,__webpack_require__);module.l=true;return module.exports}__webpack_require__.m=modules;__webpack_require__.c=installedModules;__webpack_require__.d=function(exports,name,getter){if(!__webpack_require__.o(exports,name)){Object.defineProperty(exports,name,{enumerable:true,get:getter})}};__webpack_require__.r=function(exports){if(typeof Symbol!==\\"undefined\\"&&Symbol.toStringTag){Object.defineProperty(exports,Symbol.toStringTag,{value:\\"Module\\"})}Object.defineProperty(exports,\\"__esModule\\",{value:true})};__webpack_require__.t=function(value,mode){if(mode&1)value=__webpack_require__(value);if(mode&8)return value;if(mode&4&&typeof value===\\"object\\"&&value&&value.__esModule)return value;var ns=Object.create(null);__webpack_require__.r(ns);Object.defineProperty(ns,\\"default\\",{enumerable:true,value:value});if(mode&2&&typeof value!=\\"string\\")for(var key in value)__webpack_require__.d(ns,key,function(key){return value[key]}.bind(null,key));return ns};__webpack_require__.n=function(module){var getter=module&&module.__esModule?function getDefault(){return module[\\"default\\"]}:function getModuleExports(){return module};__webpack_require__.d(getter,\\"a\\",getter);return getter};__webpack_require__.o=function(object,property){return Object.prototype.hasOwnProperty.call(object,property)};__webpack_require__.p=\\"\\";return __webpack_require__(__webpack_require__.s=5)})([function(module,exports,__webpack_require__){\\"use strict\\";var isOldIE=function isOldIE(){var memo;return function memorize(){if(typeof memo===\\"undefined\\"){memo=Boolean(window&&document&&document.all&&!window.atob)}return memo}}();var getTarget=function getTarget(){var memo={};return function memorize(target){if(typeof memo[target]===\\"undefined\\"){var styleTarget=document.querySelector(target);if(window.HTMLIFrameElement&&styleTarget instanceof window.HTMLIFrameElement){try{styleTarget=styleTarget.contentDocument.head}catch(e){styleTarget=null}}memo[target]=styleTarget}return memo[target]}}();var stylesInDom=[];function getIndexByIdentifier(identifier){var result=-1;for(var i=0;i<stylesInDom.length;i++){if(stylesInDom[i].identifier===identifier){result=i;break}}return result}function modulesToDom(list,options){var idCountMap={};var identifiers=[];for(var i=0;i<list.length;i++){var item=list[i];var id=options.base?item[0]+options.base:item[0];var count=idCountMap[id]||0;var identifier=\\"\\".concat(id,\\" \\").concat(count);idCountMap[id]=count+1;var index=getIndexByIdentifier(identifier);var obj={css:item[1],media:item[2],sourceMap:item[3]};if(index!==-1){stylesInDom[index].references++;stylesInDom[index].updater(obj)}else{stylesInDom.push({identifier:identifier,updater:addStyle(obj,options),references:1})}identifiers.push(identifier)}return identifiers}function insertStyleElement(options){var style=document.createElement(\\"style\\");var attributes=options.attributes||{};if(typeof attributes.nonce===\\"undefined\\"){var nonce=true?__webpack_require__.nc:undefined;if(nonce){attributes.nonce=nonce}}Object.keys(attributes).forEach((function(key){style.setAttribute(key,attributes[key])}));if(typeof options.insert===\\"function\\"){options.insert(style)}else{var target=getTarget(options.insert||\\"head\\");if(!target){throw new Error(\\"Couldn't find a style target. This probably means that the value for the 'insert' parameter is invalid.\\")}target.appendChild(style)}return style}function removeStyleElement(style){if(style.parentNode===null){return false}style.parentNode.removeChild(style)}var replaceText=function replaceText(){var textStore=[];return function replace(index,replacement){textStore[index]=replacement;return textStore.filter(Boolean).join(\\"\\\\n\\")}}();function applyToSingletonTag(style,index,remove,obj){var css=remove?\\"\\":obj.media?\\"@media \\".concat(obj.media,\\" {\\").concat(obj.css,\\"}\\"):obj.css;if(style.styleSheet){style.styleSheet.cssText=replaceText(index,css)}else{var cssNode=document.createTextNode(css);var childNodes=style.childNodes;if(childNodes[index]){style.removeChild(childNodes[index])}if(childNodes.length){style.insertBefore(cssNode,childNodes[index])}else{style.appendChild(cssNode)}}}function applyToTag(style,options,obj){var css=obj.css;var media=obj.media;var sourceMap=obj.sourceMap;if(media){style.setAttribute(\\"media\\",media)}else{style.removeAttribute(\\"media\\")}if(sourceMap&&btoa){css+=\\"\\\\n/*# sourceMappingURL=data:application/json;base64,\\".concat(btoa(unescape(encodeURIComponent(JSON.stringify(sourceMap)))),\\" */\\")}if(style.styleSheet){style.styleSheet.cssText=css}else{while(style.firstChild){style.removeChild(style.firstChild)}style.appendChild(document.createTextNode(css))}}var singleton=null;var singletonCounter=0;function addStyle(obj,options){var style;var update;var remove;if(options.singleton){var styleIndex=singletonCounter++;style=singleton||(singleton=insertStyleElement(options));update=applyToSingletonTag.bind(null,style,styleIndex,false);remove=applyToSingletonTag.bind(null,style,styleIndex,true)}else{style=insertStyleElement(options);update=applyToTag.bind(null,style,options);remove=function remove(){removeStyleElement(style)}}update(obj);return function updateStyle(newObj){if(newObj){if(newObj.css===obj.css&&newObj.media===obj.media&&newObj.sourceMap===obj.sourceMap){return}update(obj=newObj)}else{remove()}}}module.exports=function(list,options){options=options||{};if(!options.singleton&&typeof options.singleton!==\\"boolean\\"){options.singleton=isOldIE()}list=list||[];var lastIdentifiers=modulesToDom(list,options);return function update(newList){newList=newList||[];if(Object.prototype.toString.call(newList)!==\\"[object Array]\\"){return}for(var i=0;i<lastIdentifiers.length;i++){var identifier=lastIdentifiers[i];var index=getIndexByIdentifier(identifier);stylesInDom[index].references--}var newLastIdentifiers=modulesToDom(newList,options);for(var _i=0;_i<lastIdentifiers.length;_i++){var _identifier=lastIdentifiers[_i];var _index=getIndexByIdentifier(_identifier);if(stylesInDom[_index].references===0){stylesInDom[_index].updater();stylesInDom.splice(_index,1)}}lastIdentifiers=newLastIdentifiers}}},function(module,exports,__webpack_require__){\\"use strict\\";module.exports=function(useSourceMap){var list=[];list.toString=function toString(){return this.map((function(item){var content=cssWithMappingToString(item,useSourceMap);if(item[2]){return\\"@media \\".concat(item[2],\\" {\\").concat(content,\\"}\\")}return content})).join(\\"\\")};list.i=function(modules,mediaQuery,dedupe){if(typeof modules===\\"string\\"){modules=[[null,modules,\\"\\"]]}var alreadyImportedModules={};if(dedupe){for(var i=0;i<this.length;i++){var id=this[i][0];if(id!=null){alreadyImportedModules[id]=true}}}for(var _i=0;_i<modules.length;_i++){var item=[].concat(modules[_i]);if(dedupe&&alreadyImportedModules[item[0]]){continue}if(mediaQuery){if(!item[2]){item[2]=mediaQuery}else{item[2]=\\"\\".concat(mediaQuery,\\" and \\").concat(item[2])}}list.push(item)}};return list};function cssWithMappingToString(item,useSourceMap){var content=item[1]||\\"\\";var cssMapping=item[3];if(!cssMapping){return content}if(useSourceMap&&typeof btoa===\\"function\\"){var sourceMapping=toComment(cssMapping);var sourceURLs=cssMapping.sources.map((function(source){return\\"/*# sourceURL=\\".concat(cssMapping.sourceRoot||\\"\\").concat(source,\\" */\\")}));return[content].concat(sourceURLs).concat([sourceMapping]).join(\\"\\\\n\\")}return[content].join(\\"\\\\n\\")}function toComment(sourceMap){var base64=btoa(unescape(encodeURIComponent(JSON.stringify(sourceMap))));var data=\\"sourceMappingURL=data:application/json;charset=utf-8;base64,\\".concat(base64);return\\"/*# \\".concat(data,\\" */\\")}},function(module,exports,__webpack_require__){\\"use strict\\";module.exports=function(url,options){if(!options){options={}}url=url&&url.__esModule?url.default:url;if(typeof url!==\\"string\\"){return url}if(/^['\\"].*['\\"]$/.test(url)){url=url.slice(1,-1)}if(options.hash){url+=options.hash}if(/[\\"'() \\\\t\\\\n]/.test(url)||options.needQuotes){return'\\"'.concat(url.replace(/\\"/g,'\\\\\\\\\\"').replace(/\\\\n/g,\\"\\\\\\\\n\\"),'\\"')}return url}},function(module,exports){module.exports=\\"data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMDAiIGhlaWdodD0iMTAwIiB2ZXJzaW9uPSIxLjEiPjxjaXJjbGUgY3g9IjUwIiBjeT0iNTAiIHI9IjI1Ii8+PC9zdmc+\\"},function(module,__webpack_exports__,__webpack_require__){__webpack_require__.r(__webpack_exports__);var ns=__kbnBundles__.get(\\"plugin/foo/public\\");Object.defineProperties(__webpack_exports__,Object.getOwnPropertyDescriptors(ns))},function(module,__webpack_exports__,__webpack_require__){\\"use strict\\";__webpack_require__.r(__webpack_exports__);var _node_modules_val_loader_dist_cjs_js_key_bar_kbn_ui_shared_deps_public_path_module_creator_js__WEBPACK_IMPORTED_MODULE_0__=__webpack_require__(6);var _node_modules_val_loader_dist_cjs_js_key_bar_kbn_ui_shared_deps_public_path_module_creator_js__WEBPACK_IMPORTED_MODULE_0___default=__webpack_require__.n(_node_modules_val_loader_dist_cjs_js_key_bar_kbn_ui_shared_deps_public_path_module_creator_js__WEBPACK_IMPORTED_MODULE_0__);__kbnBundles__.define(\\"plugin/bar/public\\",__webpack_require__,25)},function(module,exports,__webpack_require__){__webpack_require__.p=window.__kbnPublicPath__[\\"bar\\"]},function(module,exports,__webpack_require__){switch(window.__kbnThemeTag__){case\\"v7dark\\":return __webpack_require__(8);case\\"v7light\\":return __webpack_require__(10);case\\"v8dark\\":return __webpack_require__(12);case\\"v8light\\":return __webpack_require__(14)}},function(module,exports,__webpack_require__){var api=__webpack_require__(0);var content=__webpack_require__(9);content=content.__esModule?content.default:content;if(typeof content===\\"string\\"){content=[[module.i,content,\\"\\"]]}var options={};options.insert=\\"head\\";options.singleton=false;var update=api(content,options);var exported=content.locals?content.locals:{};module.exports=exported},function(module,exports,__webpack_require__){var ___CSS_LOADER_API_IMPORT___=__webpack_require__(1);var ___CSS_LOADER_GET_URL_IMPORT___=__webpack_require__(2);var ___CSS_LOADER_URL_IMPORT_0___=__webpack_require__(3);exports=___CSS_LOADER_API_IMPORT___(false);var ___CSS_LOADER_URL_REPLACEMENT_0___=___CSS_LOADER_GET_URL_IMPORT___(___CSS_LOADER_URL_IMPORT_0___);exports.push([module.i,\\"body {\\\\n  width: 10;\\\\n  background-image: url(\\"+___CSS_LOADER_URL_REPLACEMENT_0___+\\"); }\\\\n\\",\\"\\"]);module.exports=exports},function(module,exports,__webpack_require__){var api=__webpack_require__(0);var content=__webpack_require__(11);content=content.__esModule?content.default:content;if(typeof content===\\"string\\"){content=[[module.i,content,\\"\\"]]}var options={};options.insert=\\"head\\";options.singleton=false;var update=api(content,options);var exported=content.locals?content.locals:{};module.exports=exported},function(module,exports,__webpack_require__){var ___CSS_LOADER_API_IMPORT___=__webpack_require__(1);var ___CSS_LOADER_GET_URL_IMPORT___=__webpack_require__(2);var ___CSS_LOADER_URL_IMPORT_0___=__webpack_require__(3);exports=___CSS_LOADER_API_IMPORT___(false);var ___CSS_LOADER_URL_REPLACEMENT_0___=___CSS_LOADER_GET_URL_IMPORT___(___CSS_LOADER_URL_IMPORT_0___);exports.push([module.i,\\"body {\\\\n  width: 11;\\\\n  background-image: url(\\"+___CSS_LOADER_URL_REPLACEMENT_0___+\\"); }\\\\n\\",\\"\\"]);module.exports=exports},function(module,exports,__webpack_require__){var api=__webpack_require__(0);var content=__webpack_require__(13);content=content.__esModule?content.default:content;if(typeof content===\\"string\\"){content=[[module.i,content,\\"\\"]]}var options={};options.insert=\\"head\\";options.singleton=false;var update=api(content,options);var exported=content.locals?content.locals:{};module.exports=exported},function(module,exports,__webpack_require__){var ___CSS_LOADER_API_IMPORT___=__webpack_require__(1);var ___CSS_LOADER_GET_URL_IMPORT___=__webpack_require__(2);var ___CSS_LOADER_URL_IMPORT_0___=__webpack_require__(3);exports=___CSS_LOADER_API_IMPORT___(false);var ___CSS_LOADER_URL_REPLACEMENT_0___=___CSS_LOADER_GET_URL_IMPORT___(___CSS_LOADER_URL_IMPORT_0___);exports.push([module.i,\\"body {\\\\n  width: 12;\\\\n  background-image: url(\\"+___CSS_LOADER_URL_REPLACEMENT_0___+\\"); }\\\\n\\",\\"\\"]);module.exports=exports},function(module,exports,__webpack_require__){var api=__webpack_require__(0);var content=__webpack_require__(15);content=content.__esModule?content.default:content;if(typeof content===\\"string\\"){content=[[module.i,content,\\"\\"]]}var options={};options.insert=\\"head\\";options.singleton=false;var update=api(content,options);var exported=content.locals?content.locals:{};module.exports=exported},function(module,exports,__webpack_require__){var ___CSS_LOADER_API_IMPORT___=__webpack_require__(1);var ___CSS_LOADER_GET_URL_IMPORT___=__webpack_require__(2);var ___CSS_LOADER_URL_IMPORT_0___=__webpack_require__(3);exports=___CSS_LOADER_API_IMPORT___(false);var ___CSS_LOADER_URL_REPLACEMENT_0___=___CSS_LOADER_GET_URL_IMPORT___(___CSS_LOADER_URL_IMPORT_0___);exports.push([module.i,\\"body {\\\\n  width: 13;\\\\n  background-image: url(\\"+___CSS_LOADER_URL_REPLACEMENT_0___+\\"); }\\\\n\\",\\"\\"]);module.exports=exports},function(module,exports,__webpack_require__){switch(window.__kbnThemeTag__){case\\"v7dark\\":return __webpack_require__(17);case\\"v7light\\":return __webpack_require__(19);case\\"v8dark\\":return __webpack_require__(21);case\\"v8light\\":return __webpack_require__(23)}},function(module,exports,__webpack_require__){var api=__webpack_require__(0);var content=__webpack_require__(18);content=content.__esModule?content.default:content;if(typeof content===\\"string\\"){content=[[module.i,content,\\"\\"]]}var options={};options.insert=\\"head\\";options.singleton=false;var update=api(content,options);var exported=content.locals?content.locals:{};module.exports=exported},function(module,exports,__webpack_require__){var ___CSS_LOADER_API_IMPORT___=__webpack_require__(1);exports=___CSS_LOADER_API_IMPORT___(false);exports.push([module.i,\\"body {\\\\n  color: green; }\\\\n\\",\\"\\"]);module.exports=exports},function(module,exports,__webpack_require__){var api=__webpack_require__(0);var content=__webpack_require__(20);content=content.__esModule?content.default:content;if(typeof content===\\"string\\"){content=[[module.i,content,\\"\\"]]}var options={};options.insert=\\"head\\";options.singleton=false;var update=api(content,options);var exported=content.locals?content.locals:{};module.exports=exported},function(module,exports,__webpack_require__){var ___CSS_LOADER_API_IMPORT___=__webpack_require__(1);exports=___CSS_LOADER_API_IMPORT___(false);exports.push([module.i,\\"body {\\\\n  color: green; }\\\\n\\",\\"\\"]);module.exports=exports},function(module,exports,__webpack_require__){var api=__webpack_require__(0);var content=__webpack_require__(22);content=content.__esModule?content.default:content;if(typeof content===\\"string\\"){content=[[module.i,content,\\"\\"]]}var options={};options.insert=\\"head\\";options.singleton=false;var update=api(content,options);var exported=content.locals?content.locals:{};module.exports=exported},function(module,exports,__webpack_require__){var ___CSS_LOADER_API_IMPORT___=__webpack_require__(1);exports=___CSS_LOADER_API_IMPORT___(false);exports.push([module.i,\\"body {\\\\n  color: green; }\\\\n\\",\\"\\"]);module.exports=exports},function(module,exports,__webpack_require__){var api=__webpack_require__(0);var content=__webpack_require__(24);content=content.__esModule?content.default:content;if(typeof content===\\"string\\"){content=[[module.i,content,\\"\\"]]}var options={};options.insert=\\"head\\";options.singleton=false;var update=api(content,options);var exported=content.locals?content.locals:{};module.exports=exported},function(module,exports,__webpack_require__){var ___CSS_LOADER_API_IMPORT___=__webpack_require__(1);exports=___CSS_LOADER_API_IMPORT___(false);exports.push([module.i,\\"body {\\\\n  color: green; }\\\\n\\",\\"\\"]);module.exports=exports},function(module,__webpack_exports__,__webpack_require__){\\"use strict\\";__webpack_require__.r(__webpack_exports__);var styles=__webpack_require__(7);var public_0=__webpack_require__(16);var public_=__webpack_require__(4);function barLibFn(){return\\"bar\\"}__webpack_require__.d(__webpack_exports__,\\"barLibFn\\",(function(){return barLibFn}));__webpack_require__.d(__webpack_exports__,\\"fooLibFn\\",(function(){return public_[\\"fooLibFn\\"]}))}]);"`;
 
 exports[`prepares assets for distribution: foo async bundle 1`] = `"(window[\\"foo_bundle_jsonpfunction\\"]=window[\\"foo_bundle_jsonpfunction\\"]||[]).push([[1],{3:function(module,__webpack_exports__,__webpack_require__){\\"use strict\\";__webpack_require__.r(__webpack_exports__);__webpack_require__.d(__webpack_exports__,\\"foo\\",(function(){return foo}));function foo(){}}}]);"`;
diff --git a/packages/kbn-optimizer/src/integration_tests/basic_optimization.test.ts b/packages/kbn-optimizer/src/integration_tests/basic_optimization.test.ts
index abbeb72af784c..5863e30f42d6f 100644
--- a/packages/kbn-optimizer/src/integration_tests/basic_optimization.test.ts
+++ b/packages/kbn-optimizer/src/integration_tests/basic_optimization.test.ts
@@ -24,7 +24,7 @@ import { inspect } from 'util';
 
 import cpy from 'cpy';
 import del from 'del';
-import { toArray, tap } from 'rxjs/operators';
+import { toArray, tap, filter } from 'rxjs/operators';
 import { ToolingLog, REPO_ROOT } from '@kbn/dev-utils';
 import { runOptimizer, OptimizerConfig, OptimizerUpdate, logOptimizerState } from '@kbn/optimizer';
 
@@ -63,8 +63,7 @@ afterAll(async () => {
   await del(TMP_DIR);
 });
 
-// FLAKY: https://github.com/elastic/kibana/issues/70762
-it.skip('builds expected bundles, saves bundle counts to metadata', async () => {
+it('builds expected bundles, saves bundle counts to metadata', async () => {
   const config = OptimizerConfig.create({
     repoRoot: MOCK_REPO_DIR,
     pluginScanDirs: [Path.resolve(MOCK_REPO_DIR, 'plugins')],
@@ -75,7 +74,11 @@ it.skip('builds expected bundles, saves bundle counts to metadata', async () =>
   expect(config).toMatchSnapshot('OptimizerConfig');
 
   const msgs = await runOptimizer(config)
-    .pipe(logOptimizerState(log, config), toArray())
+    .pipe(
+      logOptimizerState(log, config),
+      filter((x) => x.event?.type !== 'worker stdio'),
+      toArray()
+    )
     .toPromise();
 
   const assert = (statement: string, truth: boolean, altStates?: OptimizerUpdate[]) => {
@@ -168,8 +171,7 @@ it.skip('builds expected bundles, saves bundle counts to metadata', async () =>
   `);
 });
 
-// FLAKY: https://github.com/elastic/kibana/issues/70764
-it.skip('uses cache on second run and exist cleanly', async () => {
+it('uses cache on second run and exist cleanly', async () => {
   const config = OptimizerConfig.create({
     repoRoot: MOCK_REPO_DIR,
     pluginScanDirs: [Path.resolve(MOCK_REPO_DIR, 'plugins')],