Code completion fails with: Failed to release allowEditsDuringSuggestionPreview semaphore

[deki]

Describe the bug
After updating the Amazon Q plugin to 3.52-243 I'm getting exception popups while editing code.

Failed to release allowEditsDuringSuggestionPreview semaphore

java.lang.IllegalStateException: The number of released permits cannot be greater than 2
	at kotlinx.coroutines.sync.SemaphoreImpl.release(Semaphore.kt:252)
	at software.aws.toolkits.jetbrains.services.codewhisperer.popup.listeners.CodeWhispererPopupIntelliSenseAcceptListenerKt$addIntelliSenseAcceptListener$2.cleanup(CodeWhispererPopupIntelliSenseAcceptListener.kt:56)
	at software.aws.toolkits.jetbrains.services.codewhisperer.popup.listeners.CodeWhispererPopupIntelliSenseAcceptListenerKt$addIntelliSenseAcceptListener$2.lookupCanceled(CodeWhispererPopupIntelliSenseAcceptListener.kt:50)
	at com.intellij.codeInsight.lookup.impl.LookupImpl.fireLookupCanceled(LookupImpl.java:1049)
	at com.intellij.codeInsight.lookup.impl.LookupImpl.doHide(LookupImpl.java:1222)
	at com.intellij.codeInsight.lookup.impl.LookupImpl.hideLookup(LookupImpl.java:1196)
	at com.intellij.codeInsight.lookup.impl.LookupImpl.hide(LookupImpl.java:1187)
	at com.intellij.codeInsight.hint.LocalHintManager.hideAllHints(LocalHintManager.java:302)
	at com.intellij.codeInsight.hint.LocalHintManager$3.mousePressed(LocalHintManager.java:91)
	at com.intellij.openapi.editor.impl.EditorImpl$MyMouseAdapter.runMousePressedCommand(EditorImpl.java:4358)
	at com.intellij.openapi.editor.impl.EditorImpl$MyMouseAdapter.mousePressed(EditorImpl.java:4301)
	at java.desktop/java.awt.Component.processMouseEvent(Component.java:6659)
	at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3394)
	at java.desktop/java.awt.Component.processEvent(Component.java:6427)
	at java.desktop/java.awt.Container.processEvent(Container.java:2266)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5032)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2324)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4860)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4963)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4574)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4518)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2310)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2810)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4860)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:783)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:728)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:722)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:98)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:755)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:753)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:752)
	at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.kt:675)
	at com.intellij.ide.IdeEventQueue.dispatchMouseEvent(IdeEventQueue.kt:621)
	at com.intellij.ide.IdeEventQueue._dispatchEvent$lambda$21(IdeEventQueue.kt:564)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteIntentReadAction(AnyThreadWriteThreadingSupport.kt:128)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.kt:564)
	at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$18$lambda$17$lambda$16$lambda$15(IdeEventQueue.kt:355)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:857)
	at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$18$lambda$17$lambda$16(IdeEventQueue.kt:354)
	at com.intellij.ide.IdeEventQueueKt.performActivity$lambda$2$lambda$1(IdeEventQueue.kt:1045)
	at com.intellij.openapi.application.WriteIntentReadAction.lambda$run$0(WriteIntentReadAction.java:24)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteIntentReadAction(AnyThreadWriteThreadingSupport.kt:128)
	at com.intellij.openapi.application.impl.ApplicationImpl.runWriteIntentReadAction(ApplicationImpl.java:917)
	at com.intellij.openapi.application.WriteIntentReadAction.compute(WriteIntentReadAction.java:55)
	at com.intellij.openapi.application.WriteIntentReadAction.run(WriteIntentReadAction.java:23)
	at com.intellij.ide.IdeEventQueueKt.performActivity$lambda$2(IdeEventQueue.kt:1045)
	at com.intellij.ide.IdeEventQueueKt.performActivity$lambda$3(IdeEventQueue.kt:1054)
	at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:117)
	at com.intellij.ide.IdeEventQueueKt.performActivity(IdeEventQueue.kt:1054)
	at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$18(IdeEventQueue.kt:349)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.kt:395)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:207)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:92)

To reproduce

1. Open a Java class
2. Start typing and use Command+Space

Expected behavior
Successful outcomplete

Screenshots

Your Environment
IntelliJ IDEA 2024.3.2.2 (Ultimate Edition)
Build #IU-243.23654.189, built on January 29, 2025
Licensed to Amazon Corporate, LLC

Runtime version: 21.0.5+8-b631.30 aarch64 (JCEF 122.1.9)
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Toolkit: sun.lwawt.macosx.LWCToolkit
macOS 15.3
GC: G1 Young Generation, G1 Concurrent GC, G1 Old Generation
Memory: 3072M
Cores: 8
Metal Rendering is ON
Registry:
ide.experimental.ui=true
Non-Bundled Plugins:
aws.toolkit.core (3.52-243)
com.jetbrains.space (243.23654.19)
org.asciidoctor.intellij.asciidoc (0.43.6)
amazon.q (3.52-243)
aws.toolkit (3.52-243)
Kotlin: 243.23654.189-IJ

• AWS Toolkit version: 3.52-243
• SAM CLI version: 1.132.0

Additional context

[m-gersten]

I am seeing the same issue on 3.52-242. It makes the plugin basically unusable. I have disabled it for now.

Thanks for your attention to this.

[rlmartinezacosta]

I can confirm this issue as well, the plugin is currently unusable.

[bryceitoc9]

Hi all, thanks for reaching out. @deki @m-gersten @rlmartinezacosta a few questions:

• Is the error showing up outside the error pane in the corner, and is it continuous?
• Is there anything in particular that's triggering the error?
• Can you send a screenshot of what you're seeing?

[deki]

[m-gersten]

It shows up as an IDE encountered an internal error dialog in the bottom right that expands to this modal

I haven't noticed anything in particular that triggers it. It seems to happen randomly after a code suggestion is offered. It's not every single time but happens within a couple minutes of restarting IntelliJ.

For reference, the full stack trace is

Failed to release allowEditsDuringSuggestionPreview semaphore

java.lang.IllegalStateException: The number of released permits cannot be greater than 2
	at kotlinx.coroutines.sync.SemaphoreImpl.release(Semaphore.kt:252)
	at software.aws.toolkits.jetbrains.services.codewhisperer.popup.listeners.CodeWhispererPopupIntelliSenseAcceptListenerKt$addIntelliSenseAcceptListener$2.cleanup(CodeWhispererPopupIntelliSenseAcceptListener.kt:56)
	at software.aws.toolkits.jetbrains.services.codewhisperer.popup.listeners.CodeWhispererPopupIntelliSenseAcceptListenerKt$addIntelliSenseAcceptListener$2.lookupCanceled(CodeWhispererPopupIntelliSenseAcceptListener.kt:50)
	at com.intellij.codeInsight.lookup.impl.LookupImpl.fireLookupCanceled(LookupImpl.java:1019)
	at com.intellij.codeInsight.lookup.impl.LookupImpl.doHide(LookupImpl.java:1197)
	at com.intellij.codeInsight.lookup.impl.LookupImpl.hideLookup(LookupImpl.java:1171)
	at com.intellij.codeInsight.completion.CompletionProgressIndicator.lambda$stop$6(CompletionProgressIndicator.java:707)
	at com.intellij.util.concurrency.ContextRunnable.run(ContextRunnable.java:27)
	at com.intellij.openapi.application.TransactionGuardImpl.runWithWritingAllowed(TransactionGuardImpl.java:229)
	at com.intellij.openapi.application.TransactionGuardImpl.access$100(TransactionGuardImpl.java:22)
	at com.intellij.openapi.application.TransactionGuardImpl$1.run(TransactionGuardImpl.java:191)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runIntendedWriteActionOnCurrentThread$lambda$1(AnyThreadWriteThreadingSupport.kt:184)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteIntentReadAction(AnyThreadWriteThreadingSupport.kt:84)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runIntendedWriteActionOnCurrentThread(AnyThreadWriteThreadingSupport.kt:183)
	at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:836)
	at com.intellij.openapi.application.impl.ApplicationImpl$2.run(ApplicationImpl.java:424)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWithImplicitRead(AnyThreadWriteThreadingSupport.kt:122)
	at com.intellij.openapi.application.impl.ApplicationImpl.runWithImplicitRead(ApplicationImpl.java:1162)
	at com.intellij.openapi.application.impl.FlushQueue.doRun(FlushQueue.java:78)
	at com.intellij.openapi.application.impl.FlushQueue.runNextEvent(FlushQueue.java:119)
	at com.intellij.openapi.application.impl.FlushQueue.flushNow(FlushQueue.java:41)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:318)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:781)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:728)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:722)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:750)
	at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.kt:696)
	at com.intellij.ide.IdeEventQueue._dispatchEvent$lambda$16(IdeEventQueue.kt:590)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWithoutImplicitRead(AnyThreadWriteThreadingSupport.kt:117)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.kt:590)
	at com.intellij.ide.IdeEventQueue.access$_dispatchEvent(IdeEventQueue.kt:73)
	at com.intellij.ide.IdeEventQueue$dispatchEvent$processEventRunnable$1$1$1$1.compute(IdeEventQueue.kt:357)
	at com.intellij.ide.IdeEventQueue$dispatchEvent$processEventRunnable$1$1$1$1.compute(IdeEventQueue.kt:356)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:843)
	at com.intellij.ide.IdeEventQueue$dispatchEvent$processEventRunnable$1$1$1.invoke(IdeEventQueue.kt:356)
	at com.intellij.ide.IdeEventQueue$dispatchEvent$processEventRunnable$1$1$1.invoke(IdeEventQueue.kt:351)
	at com.intellij.ide.IdeEventQueueKt$performActivity$runnableWithWIL$1.invoke$lambda$0(IdeEventQueue.kt:1035)
	at com.intellij.openapi.application.WriteIntentReadAction.lambda$run$0(WriteIntentReadAction.java:24)
	at com.intellij.openapi.application.impl.AnyThreadWriteThreadingSupport.runWriteIntentReadAction(AnyThreadWriteThreadingSupport.kt:84)
	at com.intellij.openapi.application.impl.ApplicationImpl.runWriteIntentReadAction(ApplicationImpl.java:910)
	at com.intellij.openapi.application.WriteIntentReadAction.compute(WriteIntentReadAction.java:55)
	at com.intellij.openapi.application.WriteIntentReadAction.run(WriteIntentReadAction.java:23)
	at com.intellij.ide.IdeEventQueueKt$performActivity$runnableWithWIL$1.invoke(IdeEventQueue.kt:1035)
	at com.intellij.ide.IdeEventQueueKt$performActivity$runnableWithWIL$1.invoke(IdeEventQueue.kt:1035)
	at com.intellij.ide.IdeEventQueueKt.performActivity$lambda$1(IdeEventQueue.kt:1036)
	at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:106)
	at com.intellij.ide.IdeEventQueueKt.performActivity(IdeEventQueue.kt:1036)
	at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$10(IdeEventQueue.kt:351)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.kt:397)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:207)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:92)

[andrewyuq]

This has been fixed in the latest version v3.53. Please manually update or the plugin will auto-update to the latest to have this fix.

[deki]

I can confirm the error is gone after upgrading to the newer version.