[BUG] Plugin for JetBrains IDEs: java.lang.NoClassDefFoundError: org/jetbrains/plugins/terminal/TerminalToolWindowManager

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?

I have the Claude Code plugin in IntelliJ IDEA 2025.3.4, I launch claude from Terminal.app and have it connected to IntelliJ through /ide. Everything works fine with the claude command. When it wants to show me a diff, that diff is properly opened in IntelliJ.

However, from time to time, IntelliJ reports a crash in the Claude Code plugin. See stacktrace. Note that I don’t use IntelliJ’s builtin terminal. I even have it disabled (I have the Terminal plugin bundled, but disabled).

Maybe related to #2206.

What Should Happen?

IntelliJ should not report any internal error.

Error Messages/Logs

java.lang.NoClassDefFoundError: org/jetbrains/plugins/terminal/TerminalToolWindowManager
	at com.anthropic.code.plugin.terminal.ClaudeFilePathFilter.<init>(ClaudeConsoleFilterProvider.kt:49)
	at com.anthropic.code.plugin.terminal.ClaudeConsoleFilterProvider.getDefaultFilters(ClaudeConsoleFilterProvider.kt:31)
	at com.intellij.execution.impl.ConsoleViewUtil.computeConsoleFilters(ConsoleViewUtil.java:288)
	at com.intellij.execution.impl.ConsoleViewUtil.computeConsoleFilters(ConsoleViewUtil.java:298)
	at com.intellij.execution.impl.ConsoleViewImpl.updatePredefinedFiltersLater$lambda$0(ConsoleViewImpl.kt:199)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$OTelMonitor.callWrapped(NonBlockingReadActionImpl.java:929)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$OTelMonitor$MonitoredComputation.call(NonBlockingReadActionImpl.java:961)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.insideReadAction(NonBlockingReadActionImpl.java:685)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.lambda$attemptComputation$6(NonBlockingReadActionImpl.java:648)
	at com.intellij.platform.locking.impl.NestedLocksThreadingSupport.tryRunReadAction(NestedLocksThreadingSupport.kt:901)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1237)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtils.lambda$runInReadActionWithWriteActionPriority$0(ProgressIndicatorUtils.java:94)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtilService.runActionAndCancelBeforeWrite(ProgressIndicatorUtilService.java:73)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runActionAndCancelBeforeWrite(ProgressIndicatorUtils.java:152)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtils.lambda$runWithWriteActionPriority$1(ProgressIndicatorUtils.java:139)
	at com.intellij.openapi.progress.ProgressManager.lambda$runProcess$0(ProgressManager.java:98)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:256)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeProcessUnderProgress$14(CoreProgressManager.java:717)
	at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:792)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:748)
	at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:716)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:75)
	at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:240)
	at com.intellij.openapi.progress.ProgressManager.runProcess(ProgressManager.java:98)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runWithWriteActionPriority(ProgressIndicatorUtils.java:136)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runInReadActionWithWriteActionPriority(ProgressIndicatorUtils.java:94)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.attemptComputation(NonBlockingReadActionImpl.java:648)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.lambda$transferToBgThread$1(NonBlockingReadActionImpl.java:529)
	at com.intellij.concurrency.ThreadContext.installThreadContext(threadContext.kt:305)
	at com.intellij.openapi.application.impl.NonBlockingReadActionImpl$Submission.lambda$transferToBgThread$2(NonBlockingReadActionImpl.java:529)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:735)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:732)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:732)
	at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.lang.ClassNotFoundException: org.jetbrains.plugins.terminal.TerminalToolWindowManager PluginClassLoader(plugin=PluginMainDescriptor(name=Claude Code [Beta], id=com.anthropic.code.plugin, version=0.1.14-beta, isBundled=false, path=~/Library/Application Support/JetBrains/IntelliJIdea2025.3/plugins/claude-code-jetbrains-plugin), packagePrefix=null, state=active, parents=ContentModuleDescriptor(id=intellij.platform.vcs.log.graph) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.relaxng) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.platform.vcs.log) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.platform.vcs.dvcs) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.platform.scriptDebugger.protocolReaderRuntime) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.platform.scriptDebugger.backend) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.platform.scriptDebugger.ui) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.platform.tasks) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.platform.collaborationTools.auth.base) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.platform.collaborationTools.auth) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.platform.vcs.impl) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.platform.vcs.log.impl) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.platform.vcs.dvcs.impl) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.platform.collaborationTools) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.spellchecker) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.spellchecker.xml) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), ContentModuleDescriptor(id=intellij.platform.tasks.impl) <- PluginMainDescriptor(name=IDEA CORE, id=com.intellij, version=253.32098.37, isBundled=true, path=~/Applications/IntelliJ IDEA.app/Contents/lib), )
	at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.kt:149)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
	... 37 more

Steps to Reproduce

1. Install IntelliJ IDEA 2025.3.4
2. Open the Plugins tabs in Settings.
3. Disable the bundled Terminal plugin.
4. Install Claude Code Plugin.
5. Restart IntelliJ IDEA.
6. Open Terminal.app
7. brew install claude-code
8. claude
9. /ide, select IntelliJ IDEA
10. Ask things to Claude Code.
11. View diffs in IntelliJ IDEA
12. Accept diffs from IntelliJ IDEA
13. Goto step 10.

At some point, IntelliJ should report an internal error in Claude Code plugin.

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.80 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

In case Claude Code cannot run from a terminal external to the IDE, this should be documented in https://code.claude.com/docs/en/jetbrains#usage.