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WordPress · Apr 12, 2024 · fec3423 · fec3423
1 parent 93903b4
commit fec3423
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Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/packages/block-editor/src/components/iframe/index.js b/packages/block-editor/src/components/iframe/index.js
@@ -228,6 +228,9 @@ function Iframe( {
 		clearerRef,
 		writingFlowRef,
 		disabledRef,
+		// Avoid resize listeners when not needed, these will trigger
+		// unnecessary re-renders when animating the iframe width, or when
+		// expanding preview iframes.
 		scale === 1 ? null : windowResizeRef,
 	] );
 

diff --git a/packages/edit-site/src/components/block-editor/site-editor-canvas.js b/packages/edit-site/src/components/block-editor/site-editor-canvas.js
@@ -91,7 +91,12 @@ export default function SiteEditorCanvas( { onClick } ) {
 								settings={ settings }
 								onClick={ onClick }
 							>
-								{ enableResizing && resizeObserver }
+								{
+									// Avoid resize listeners when not needed,
+									// these will trigger unnecessary re-renders
+									// when animating the iframe width.
+									enableResizing && resizeObserver
+								}
 							</EditorCanvas>
 						</ResizableEditor>
 					</div>