diff --git a/CHANGELOG.unreleased.md b/CHANGELOG.unreleased.md
index b7eab164717..b46b2c34f23 100644
--- a/CHANGELOG.unreleased.md
+++ b/CHANGELOG.unreleased.md
@@ -19,6 +19,7 @@ For upgrade instructions, please check the [migration guide](MIGRATIONS.released
 - Fixed rare SIGBUS crashes of the datastore module that were caused by memory mapping on unstable file systems. [#7528](https://github.com/scalableminds/webknossos/pull/7528)
 - Fixed loading local datasets for organizations that have spaces in their names. [#7593](https://github.com/scalableminds/webknossos/pull/7593)
 - Fixed a bug where proofreading annotations would stay black until the next server restart due to expired but cached tokens. [#7598](https://github.com/scalableminds/webknossos/pull/7598)
+- Fixed a bug where ad-hoc meshing didn't make use of a segment index, even when it existed. [#7600](https://github.com/scalableminds/webknossos/pull/7600)
 
 ### Removed
 
diff --git a/frontend/javascripts/oxalis/model/sagas/mesh_saga.ts b/frontend/javascripts/oxalis/model/sagas/mesh_saga.ts
index 24e7900d2fc..3c8b5c4e3a2 100644
--- a/frontend/javascripts/oxalis/model/sagas/mesh_saga.ts
+++ b/frontend/javascripts/oxalis/model/sagas/mesh_saga.ts
@@ -352,7 +352,7 @@ function* loadFullAdHocMesh(
     volumeTracing?.hasSegmentIndex &&
     !volumeTracing.mappingIsEditable &&
     visibleSegmentationLayer?.tracingId != null &&
-    additionalCoordinates == null; // TODO remove in https://github.com/scalableminds/webknossos/pull/7411
+    (additionalCoordinates == null || additionalCoordinates.length === 0); // TODO remove in https://github.com/scalableminds/webknossos/pull/7411
   let positionsToRequest = usePositionsFromSegmentStats
     ? yield* getChunkPositionsFromSegmentStats(
         tracingStoreHost,