Exception when trying to execute keyboard shortcut during startup indexing

[dmoebius]

IntelliJ IDEA reported an error when I pressed the keyboard shortcut for "Hide bottom tool windows" while IDEA was busy rebuilding the index:

com.intellij.diagnostic.PluginException: 1177 ms to call on BGT precache-slow-data@HideBottomToolWindows#update@keyboard shortcut (de.dmoebius.intellij.actions.HideBottomToolWindows). Revise AnAction.getActionUpdateThread property [Plugin: ToolWindowsActions]
	at com.intellij.diagnostic.PluginProblemReporterImpl.createPluginExceptionByClass(PluginProblemReporterImpl.java:23)
	at com.intellij.diagnostic.PluginException.createByClass(PluginException.java:83)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.logTimeProblemForPreCached(ActionUpdater.java:490)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.ensureSlowDataKeysPreCached(ActionUpdater.java:484)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.lambda$callAction$6(ActionUpdater.java:201)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1111)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.callAction(ActionUpdater.java:201)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.callAction(ActionUpdater.java:161)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.updateActionReal(ActionUpdater.java:137)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.lambda$new$0(ActionUpdater.java:124)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.update(ActionUpdater.java:705)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater$UpdateSessionImpl.presentation(ActionUpdater.java:814)
	at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher.doUpdateActionsInner(IdeKeyEventDispatcher.java:674)
	at com.intellij.openapi.keymap.impl.IdeKeyEventDispatcher.lambda$processAction$3(IdeKeyEventDispatcher.java:621)
	at com.intellij.openapi.actionSystem.impl.Utils.lambda$runUpdateSessionForInputEvent$15(Utils.java:764)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1111)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.lambda$tryRunReadActionAndCancelBeforeWrite$19(ActionUpdater.java:428)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtilService.runActionAndCancelBeforeWrite(ProgressIndicatorUtilService.java:63)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runActionAndCancelBeforeWrite(ProgressIndicatorUtils.java:128)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.tryRunReadActionAndCancelBeforeWrite(ActionUpdater.java:424)
	at com.intellij.openapi.actionSystem.impl.Utils.lambda$runUpdateSessionForInputEvent$16(Utils.java:764)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:787)
	at com.intellij.openapi.actionSystem.impl.Utils.lambda$runUpdateSessionForInputEvent$18(Utils.java:771)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeProcessUnderProgress$13(CoreProgressManager.java:604)
	at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:679)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:635)
	at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:603)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:60)
	at com.intellij.openapi.actionSystem.impl.Utils.lambda$runUpdateSessionForInputEvent$20(Utils.java:770)
	at com.intellij.util.concurrency.BoundedTaskExecutor.doRun(BoundedTaskExecutor.java:243)
	at com.intellij.util.concurrency.BoundedTaskExecutor.access$200(BoundedTaskExecutor.java:29)
	at com.intellij.util.concurrency.BoundedTaskExecutor$1.executeFirstTaskAndHelpQueue(BoundedTaskExecutor.java:216)
	at com.intellij.util.ConcurrencyUtil.runUnderThreadName(ConcurrencyUtil.java:212)
	at com.intellij.util.concurrency.BoundedTaskExecutor$1.run(BoundedTaskExecutor.java:205)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:702)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:699)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:699)
	at java.base/java.lang.Thread.run(Thread.java:833)