Not on Fx Thread exception when editing keywords

[mlep]

JabRef 5.0-beta.401--2020-02-03--c3363c0
Linux 4.9.0-11-amd64 amd64
Java 13.0.2

While editing a new entry (modifying the keywords), a window entitled "Exception details" pop-up. "Uncaught exception occurred in Thread[pool-31-thread-1,5,main]"

After closing the event, I could continue editing. The journal of events of JabRef was empty.

java.lang.IllegalStateException: Task must only be used from the FX Application Thread at org.jabref.merged.module/javafx.concurrent.Task.checkThread(Unknown Source) at org.jabref.merged.module/javafx.concurrent.Task.isRunning(Unknown Source) at org.jabref.merged.module/org.controlsfx.control.textfield.AutoCompletionBinding.onUserInputChanged(Unknown Source) at org.jabref.merged.module/org.controlsfx.control.textfield.AutoCompletionBinding.setUserInput(Unknown Source) at org.jabref/org.jabref.gui.autocompleter.AutoCompletionTextInputBinding.setUserInputText(Unknown Source) at org.jabref/org.jabref.gui.autocompleter.AutoCompletionTextInputBinding.lambda$new$0(Unknown Source) at org.jabref.merged.module/com.sun.javafx.binding.ExpressionHelper$Generic.fireValueChangedEvent(Unknown Source) at org.jabref.merged.module/com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(Unknown Source) at org.jabref.merged.module/javafx.scene.control.TextInputControl$TextProperty.fireValueChangedEvent(Unknown Source) at org.jabref.merged.module/javafx.scene.control.TextInputControl$TextProperty.markInvalid(Unknown Source) at org.jabref.merged.module/javafx.scene.control.TextInputControl$TextProperty.controlContentHasChanged(Unknown Source) at org.jabref.merged.module/javafx.scene.control.TextInputControl.lambda$new$0(Unknown Source) at org.jabref.merged.module/com.sun.javafx.binding.ExpressionHelper$SingleInvalidation.fireValueChangedEvent(Unknown Source) at org.jabref.merged.module/com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(Unknown Source) at org.jabref.merged.module/javafx.scene.control.TextArea$TextAreaContent.insert(Unknown Source) at org.jabref.merged.module/javafx.scene.control.TextInputControl.replaceText(Unknown Source) at org.jabref.merged.module/javafx.scene.control.TextInputControl.filterAndSet(Unknown Source) at org.jabref.merged.module/javafx.scene.control.TextInputControl$TextProperty.doSet(Unknown Source) at org.jabref.merged.module/javafx.scene.control.TextInputControl$TextProperty.set(Unknown Source) at org.jabref.merged.module/javafx.scene.control.TextInputControl$TextProperty.set(Unknown Source) at org.jabref.merged.module/javafx.beans.property.StringProperty.setValue(Unknown Source) at org.jabref.merged.module/javafx.beans.property.StringProperty.setValue(Unknown Source) at org.jabref.merged.module/com.sun.javafx.binding.BidirectionalBinding$TypedGenericBidirectionalBinding.changed(Unknown Source) at org.jabref.merged.module/com.sun.javafx.binding.ExpressionHelper$Generic.fireValueChangedEvent(Unknown Source) at org.jabref.merged.module/com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(Unknown Source) at org.jabref.merged.module/javafx.beans.property.StringPropertyBase.fireValueChangedEvent(Unknown Source) at org.jabref.merged.module/javafx.beans.property.StringPropertyBase.markInvalid(Unknown Source) at org.jabref.merged.module/javafx.beans.property.StringPropertyBase.set(Unknown Source) at org.jabref.merged.module/javafx.beans.property.StringPropertyBase.set(Unknown Source) at org.jabref.merged.module/javafx.beans.property.StringProperty.setValue(Unknown Source) at org.jabref.merged.module/javafx.beans.property.StringProperty.setValue(Unknown Source) at org.jabref/org.jabref.gui.util.BindingsHelper$BidirectionalBinding.updateLocked(Unknown Source) at org.jabref/org.jabref.gui.util.BindingsHelper$BidirectionalBinding.changedB(Unknown Source) at org.jabref.merged.module/com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(Unknown Source) at org.jabref.merged.module/com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(Unknown Source) at org.jabref.merged.module/javafx.beans.binding.ObjectBinding.invalidate(Unknown Source) at org.jabref.merged.module/com.sun.javafx.binding.BindingHelperObserver.invalidated(Unknown Source) at org.jabref.merged.module/com.sun.javafx.collections.MapListenerHelper$Generic.fireValueChangedEvent(Unknown Source) at org.jabref.merged.module/com.sun.javafx.collections.MapListenerHelper.fireValueChangedEvent(Unknown Source) at org.jabref.merged.module/com.sun.javafx.collections.ObservableMapWrapper.callObservers(Unknown Source) at org.jabref.merged.module/com.sun.javafx.collections.ObservableMapWrapper.put(Unknown Source) at org.jabref/org.jabref.model.entry.BibEntry.setField(Unknown Source) at org.jabref/org.jabref.model.cleanup.FieldFormatterCleanup.cleanupSingleField(Unknown Source) at org.jabref/org.jabref.model.cleanup.FieldFormatterCleanup.cleanupAllFields(Unknown Source) at org.jabref/org.jabref.model.cleanup.FieldFormatterCleanup.cleanup(Unknown Source) at org.jabref/org.jabref.logic.exporter.BibDatabaseWriter.applySaveActions(Unknown Source) at org.jabref/org.jabref.logic.exporter.BibDatabaseWriter.savePartOfDatabase(Unknown Source) at org.jabref/org.jabref.logic.exporter.BibDatabaseWriter.saveDatabase(Unknown Source) at org.jabref/org.jabref.logic.autosaveandbackup.BackupManager.performBackup(Unknown Source) at java.base/java.util.Optional.ifPresent(Unknown Source) at org.jabref/org.jabref.logic.autosaveandbackup.BackupManager.lambda$startBackupTask$2(Unknown Source) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.base/java.util.concurrent.FutureTask.run(Unknown Source) at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.base/java.lang.Thread.run(Unknown Source)

[Siedlerchr]

at org.jabref/org.jabref.model.entry.BibEntry.setField(Unknown Source)
org.jabref/org.jabref.model.cleanup.FieldFormatterCleanup.cleanupSingleField(Unknown Source) at org.jabref/org.jabref.model.cleanup.FieldFormatterCleanup.cleanupAllFields(Unknown Source) at org.jabref/org.jabref.model.cleanup.FieldFormatterCleanup.cleanup(Unknown Source) at org.jabref/org.jabref.logic.exporter.BibDatabaseWriter.applySaveActions(Unknown Source) at org.jabref/org.jabref.logic.exporter.BibDatabaseWriter.savePartOfDatabase(Unknown Source) at org.jabref/org.jabref.logic.exporter.BibDatabaseWriter.saveDatabase(Unknown Source) at

It seems like this is one of those errors triggered from save actions.
#5289 had a solution for a similar problem

@mlep Could you please list if you have some save actions enabled?

[mlep]

In Library -> Library properties, "Enable save actions" is NOT checked.

[davidcbenson]

I was having the same issue when entering keywords, as well as in several other fields, and I turned auto-complete off. I have been using Jabref for more than an hour without the error reoccurring, and it was happening every few minutes or so before. I also have no save actions.

EDIT: Literally no sooner did I type that, than I returned to Jabref and it threw the error. I'm leaving this up in case the error is unrelated.

[Siedlerchr]

Thank you for reporting this issue. We think, that is already fixed in our development version and consequently the change will be included in the next release.

We would like to ask you to use a development build from https://builds.jabref.org/master and report back if it works for you. Please remember to make a backup of your library before trying-out this version.