microsoft / microsoft/azure-tools-for-java
[IntelliJ] Uncaught Exception Unhandled exception in EDT com.intellij.openapi.diagnostic.UnhandledException: Cannot invoke "com.intellij.openapi.editor.ex.EditorSettingsExternalizable.isBreadcrumbsShown()" because "settings" is null
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Description
IntelliJ build version: 2026.1.1 IU-261.23567.138
OS: Mac OS X
JDK: JetBrains s.r.o. 25.0.2
Plugin version: 3.97.5-2026.1
Additional Info: None
Parent component:
com.intellij.openapi.wm.impl.IdeRootPane[,0,0,1920x1050,invalid,layout=com.intellij.openapi.wm.impl.IdeRootPane$CustomHeaderRootLayout,alignmentX=0.0,alignmentY=0.0,border=,flags=449,maximumSize=,minimumSize=,preferredSize=]
Error message:
IdeaLoggingEvent[message=Unhandled exception in EDT, throwable=com.intellij.openapi.diagnostic.UnhandledException: Cannot invoke "com.intellij.openapi.editor.ex.EditorSettingsExternalizable.isBreadcrumbsShown()" because "settings" is null
at com.intellij.openapi.application.impl.ExceptionsKt.processUnhandledException(exceptions.kt:34)
Caused by: java.lang.NullPointerException: Cannot invoke "com.intellij.openapi.editor.ex.EditorSettingsExternalizable.isBreadcrumbsShown()" because "settings" is null
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the exception in IntelliJ IU-261.23567.138 with plugin version 3.97.5-2026.1 on macOS. Trace the EDT failure involving EditorSettingsExternalizable.isBreadcrumbsShown() and the null settings value; done means the uncaught exception no longer occurs.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100