I’m seeing an issue where the same line marker provider is being called on two different threads simultaneously:
2026-05-19 09:03:23,825 [ 527170] FINE - #com.illuminatedcloud.intellij.apex.editor.lineMarker.ApexRelatedItemLineMarkerProvider - Added 2 related item line markers to 'Individual.hashCode()' on thread JobScheduler FJ pool 12/11: [(1958,1966) -> psi:range=(1958,1966),type=Identikit(class='com.intellij.psi.impl.source.tree.LeafPsiElement', elementType=IDENT, fileLanguage='Apex') (icon: PatchedRasterizedImageDataLoader(classLoader=com.intellij.util.lang.PathClassLoader@7946e1f4, path=expui/gutter/overridingMethod.svg)), (1958,1966) -> psi:range=(1958,1966),type=Identikit(class='com.intellij.psi.impl.source.tree.LeafPsiElement', elementType=IDENT, fileLanguage='Apex') (icon: PatchedRasterizedImageDataLoader(classLoader=com.intellij.util.lang.PathClassLoader@7946e1f4, path=expui/gutter/overridenMethod.svg))]
2026-05-19 09:03:23,825 [ 527170] FINE - #com.illuminatedcloud.intellij.apex.editor.lineMarker.ApexRelatedItemLineMarkerProvider - Added 2 related item line markers to 'Individual.hashCode()' on thread JobScheduler FJ pool 3/11: [(1958,1966) -> psi:range=(1958,1966),type=Identikit(class='com.intellij.psi.impl.source.tree.LeafPsiElement', elementType=IDENT, fileLanguage='Apex') (icon: PatchedRasterizedImageDataLoader(classLoader=com.intellij.util.lang.PathClassLoader@7946e1f4, path=expui/gutter/overridingMethod.svg)), (1958,1966) -> psi:range=(1958,1966),type=Identikit(class='com.intellij.psi.impl.source.tree.LeafPsiElement', elementType=IDENT, fileLanguage='Apex') (icon: PatchedRasterizedImageDataLoader(classLoader=com.intellij.util.lang.PathClassLoader@7946e1f4, path=expui/gutter/overridenMethod.svg))]
resulting in some line markers being added in duplicate:
This seems to happen primarily (only?) immediately after the document is opened in an editor tab. As soon as the document is modified, the duplicate line markers are removed.
Is there something specific I need to be doing to avoid this situation? As you can see in the debug log entries above, the added line markers are identical, so I’m surprised they’re not being deduped.