The "Run tests using generator/interpreter" action causes this.
Stack trace (from the YouTrack issue):
java.lang.AssertionError: An action must not request write-action during actions update. See CustomComponentAction.createCustomComponent javadoc, if caused by a custom component.
at com.intellij.openapi.actionSystem.impl.ActionUpdater.cancelPromise(ActionUpdater.java:632)
at com.intellij.openapi.actionSystem.impl.ActionUpdater.lambda$expandActionGroupAsync$15(ActionUpdater.java:303)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.cancelActionsToBeCancelledBeforeWrite(ProgressIndicatorUtils.java:141)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils$2.beforeWriteActionStart(ProgressIndicatorUtils.java:133)
at jdk.internal.reflect.GeneratedMethodAccessor30.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at com.intellij.util.EventDispatcher.dispatchVoidMethod(EventDispatcher.java:120)
at com.intellij.util.EventDispatcher.lambda$createMulticaster$1(EventDispatcher.java:85)
at com.sun.proxy.$Proxy39.beforeWriteActionStart(Unknown Source)
at com.intellij.openapi.application.impl.ApplicationImpl.fireBeforeWriteActionStart(ApplicationImpl.java:1314)
at com.intellij.openapi.application.impl.ApplicationImpl.startWrite(ApplicationImpl.java:1129)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:934)
at jetbrains.mps.smodel.TryRunPlatformWriteHelper.runWrite(TryRunPlatformWriteHelper.java:103)
at jetbrains.mps.smodel.TryRunPlatformWriteHelper.lambda$withPlatformWrite$1(TryRunPlatformWriteHelper.java:96)
at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:216)
at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:172)
at com.intellij.openapi.command.impl.CoreCommandProcessor.executeCommand(CoreCommandProcessor.java:162)
at jetbrains.mps.smodel.WorkbenchModelAccess.executeCommand(WorkbenchModelAccess.java:303)
at jetbrains.mps.smodel.ProjectModelAccess2.executeCommand(ProjectModelAccess2.java:35)
*** → at org.iets3.core.expr.plugin.plugin.Generator.isSelected(Generator.java:28) ← ***
at com.intellij.openapi.actionSystem.ToggleAction.update(ToggleAction.java:72)
at com.intellij.openapi.actionSystem.ex.ActionUtil.lambda$performDumbAwareUpdate$0(ActionUtil.java:130)
at com.intellij.openapi.actionSystem.ex.ActionUtil.performDumbAwareUpdate(ActionUtil.java:144)
at com.intellij.openapi.actionSystem.impl.ActionUpdater.doUpdate(ActionUpdater.java:584)
at com.intellij.openapi.actionSystem.impl.ActionUpdater.lambda$updateActionReal$7(ActionUpdater.java:132)
at com.intellij.openapi.actionSystem.impl.ActionUpdater.lambda$callAction$9(ActionUpdater.java:187)
at com.intellij.openapi.progress.ProgressManager.lambda$runProcess$0(ProgressManager.java:57)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:183)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:705)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:647)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:63)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:170)
at com.intellij.openapi.progress.ProgressManager.runProcess(ProgressManager.java:57)
at com.intellij.openapi.actionSystem.impl.ActionUpdater.lambda$callAction$10(ActionUpdater.java:185)
at com.intellij.openapi.actionSystem.impl.ActionUpdateEdtExecutor.lambda$computeOnEdt$0(ActionUpdateEdtExecutor.java:45)
at com.intellij.openapi.application.TransactionGuardImpl$2.run(TransactionGuardImpl.java:199)
at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:794)
at com.intellij.openapi.application.impl.ApplicationImpl.lambda$invokeLater$4(ApplicationImpl.java:350)
at com.intellij.openapi.application.impl.FlushQueue.doRun(FlushQueue.java:84)
at com.intellij.openapi.application.impl.FlushQueue.runNextEvent(FlushQueue.java:133)
at com.intellij.openapi.application.impl.FlushQueue.flushNow(FlushQueue.java:46)
at com.intellij.openapi.application.impl.FlushQueue$FlushNow.run(FlushQueue.java:189)
at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:776)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:727)
at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:746)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:885)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:754)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$6(IdeEventQueue.java:441)
at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:825)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$7(IdeEventQueue.java:440)
at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:794)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:486)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
See https://youtrack.jetbrains.com/issue/MPS-34348
The "Run tests using generator/interpreter" action causes this.
Stack trace (from the YouTrack issue):