[BUG] IndexOutOfBoundsException Intellij Wrong offset Should be in range LineSet.findLineIndex

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Using IntelliJ Ultimate 2025.3.1.1 with Claude Code Plugin 0.1.14-beta installed. While a file was open and lines selected, I asked Claude Code to edit the file, which caused the IDE to report errors

What Should Happen?

No Errors

Error Messages/Logs

java.lang.IndexOutOfBoundsException: Wrong offset: 32249. Should be in range: [0, 32220]
	at com.intellij.openapi.editor.impl.LineSet.findLineIndex(LineSet.java:167)
	at com.intellij.openapi.editor.impl.DocumentImpl.getLineNumber(DocumentImpl.java:1062)
	at com.anthropic.code.plugin.mcp.tools.DiagnosticTools$addTools$1$1$1.daemonFinished$lambda$0(DiagnosticTools.kt:120)
	at com.anthropic.code.plugin.mcp.tools.DiagnosticTools$addTools$1$1$1.daemonFinished$lambda$1(DiagnosticTools.kt:118)
	at com.intellij.codeInsight.daemon.impl.DaemonCodeAnalyzerEx.lambda$processHighlights$0(DaemonCodeAnalyzerEx.java:74)
	at com.intellij.util.containers.ContainerUtil.process(ContainerUtil.java:863)
	at com.intellij.openapi.editor.impl.MarkupModelImpl.processRangeHighlightersOverlappingWith(MarkupModelImpl.java:289)
	at com.intellij.codeInsight.daemon.impl.DaemonCodeAnalyzerEx.processHighlights(DaemonCodeAnalyzerEx.java:67)
	at com.intellij.codeInsight.daemon.impl.DaemonCodeAnalyzerEx.processHighlights(DaemonCodeAnalyzerEx.java:51)
	at com.anthropic.code.plugin.mcp.tools.DiagnosticTools$addTools$1$1$1.daemonFinished(DiagnosticTools.kt:112)
	at com.intellij.codeInsight.daemon.DaemonCodeAnalyzer$DaemonListener.daemonFinished(DaemonCodeAnalyzer.java:123)
	at com.intellij.util.messages.impl.MessageBusImplKt.invokeMethod(MessageBusImpl.kt:820)
	at com.intellij.util.messages.impl.MessageBusImplKt.invokeListener(MessageBusImpl.kt:764)
	at com.intellij.util.messages.impl.MessageBusImplKt.executeOrAddToQueue(MessageBusImpl.kt:585)
	at com.intellij.util.messages.impl.MessagePublisher.publish$intellij_platform_core(MessageBusImpl.kt:556)
	at com.intellij.util.messages.impl.MessagePublisher.invoke(MessageBusImpl.kt:533)
	at jdk.proxy2/jdk.proxy2.$Proxy98.daemonFinished(Unknown Source)
	at com.intellij.codeInsight.daemon.impl.DaemonCodeAnalyzerImpl$MyDaemonProgressIndicator.onStop(DaemonCodeAnalyzerImpl.java:1685)
	at com.intellij.codeInsight.daemon.impl.DaemonProgressIndicator.stop(DaemonProgressIndicator.java:39)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService.lambda$applyInformationToEditorsLater$3(PassExecutorService.java:554)
	at com.intellij.openapi.application.TransactionGuardImpl.runWithWritingAllowed(TransactionGuardImpl.java:239)
	at com.intellij.openapi.application.TransactionGuardImpl.access$100(TransactionGuardImpl.java:25)
	at com.intellij.openapi.application.TransactionGuardImpl$1.run(TransactionGuardImpl.java:201)
	at com.intellij.openapi.application.impl.AppImplKt$runnableUnitFunction$1.invoke(appImpl.kt:124)
	at com.intellij.openapi.application.impl.AppImplKt$runnableUnitFunction$1.invoke(appImpl.kt:124)
	at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.doRunWriteIntentReadAction(NestedLocksThreadingSupport.kt:737)
	at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.runPreventiveWriteIntentReadAction(NestedLocksThreadingSupport.kt:711)
	at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.runWriteIntentReadAction(NestedLocksThreadingSupport.kt:665)
	at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:1048)
	at com.intellij.openapi.application.impl.ApplicationImpl$7.lambda$run$0(ApplicationImpl.java:602)
	at com.intellij.concurrency.ThreadContext.installThreadContext(threadContext.kt:305)
	at com.intellij.openapi.application.impl.ApplicationImpl$7.run(ApplicationImpl.java:600)
	at com.intellij.util.concurrency.ChildContext$runInChildContext$1.invoke(propagation.kt:167)
	at com.intellij.util.concurrency.ChildContext$runInChildContext$1.invoke(propagation.kt:167)
	at com.intellij.util.concurrency.ChildContext.runInChildContext(propagation.kt:173)
	at com.intellij.util.concurrency.ChildContext.runInChildContext(propagation.kt:167)
	at com.intellij.util.concurrency.ContextRunnable.lambda$run$0(ContextRunnable.java:26)
	at com.intellij.concurrency.ThreadContext.resetThreadContext(threadContext.kt:294)
	at com.intellij.util.concurrency.ContextRunnable.run(ContextRunnable.java:25)
	at com.intellij.openapi.application.impl.NonBlockingFlushQueue.runNextEvent$lambda$1$1$0(NonBlockingFlushQueue.kt:334)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:901)
	at com.intellij.openapi.application.impl.NonBlockingFlushQueue.runNextEvent$lambda$1$1(NonBlockingFlushQueue.kt:333)
	at com.intellij.concurrency.ThreadContext.resetThreadContext(threadContext.kt:294)
	at com.intellij.openapi.application.impl.NonBlockingFlushQueue.runNextEvent$lambda$1(NonBlockingFlushQueue.kt:330)
	at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.tryRunWriteIntentReadAction(NestedLocksThreadingSupport.kt:690)
	at com.intellij.openapi.application.impl.NonBlockingFlushQueue.runNextEvent(NonBlockingFlushQueue.kt:326)
	at com.intellij.openapi.application.impl.NonBlockingFlushQueue.flushNow(NonBlockingFlushQueue.kt:305)
	at com.intellij.openapi.application.impl.NonBlockingFlushQueue.FLUSH_NOW$lambda$0(NonBlockingFlushQueue.kt:167)
	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:664)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.kt:517)
	at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$0$0$0(IdeEventQueue.kt:333)
	at com.intellij.ide.IdeEventQueueKt.performActivity$lambda$1(IdeEventQueue.kt:1065)
	at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:109)
	at com.intellij.ide.IdeEventQueueKt.performActivity(IdeEventQueue.kt:1065)
	at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$0(IdeEventQueue.kt:331)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.kt:371)
	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)

Steps to Reproduce

Opened a ts file in Intellij Ultimate while claude code plugin running inside IntelliJ IDE terminal. Selected the lines in the file that were concerning to me. Asked claude code to investigate the lines selected and suggested that they might not be needed. Claude code agreed and made write changes to the file that removed the lines. Then the IDE threw multiple errors ( 2) with stack traces.

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.3

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

IntelliJ IDEA terminal

Additional Information

I found previous issues with this reported problem, but they were all auto closed.