Error： Uncaught exception occurred in Thread

[cakexxx]

JabRef version on

• Mandatory: I have tested the latest development version from http://builds.jabref.org/master/ and the problem persists

Steps to reproduce the behavior:
Write comment for one of the references

Log File

java.lang.IllegalStateException: Not on FX application thread; currentThread = pool-10-thread-1
  at org.jabref.merged.module/com.sun.javafx.tk.Toolkit.checkFxUserThread(Unknown Source)
  at org.jabref.merged.module/com.sun.javafx.tk.quantum.QuantumToolkit.checkFxUserThread(Unknown Source)
  at org.jabref.merged.module/javafx.scene.Parent$3.onProposedChange(Unknown Source)
  at org.jabref.merged.module/com.sun.javafx.collections.VetoableListDecorator.setAll(Unknown Source)
  at org.jabref.merged.module/com.sun.javafx.collections.VetoableListDecorator.setAll(Unknown Source)
  at org.jabref.merged.module/javafx.scene.control.skin.LabeledSkinBase.updateChildren(Unknown Source)
  at org.jabref.merged.module/javafx.scene.control.skin.LabeledSkinBase.lambda$new$11(Unknown Source)
  at org.jabref.merged.module/com.sun.javafx.scene.control.LambdaMultiplePropertyChangeListenerHandler.lambda$new$1(Unknown Source)
  at org.jabref.merged.module/javafx.beans.value.WeakChangeListener.changed(Unknown Source)
  at org.jabref.merged.module/com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(Unknown Source)
  at org.jabref.merged.module/com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(Unknown Source)
  at org.jabref.merged.module/javafx.beans.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.scene.control.Labeled.setText(Unknown Source)
  at org.jabref.merged.module/javafx.scene.control.skin.TabPaneSkin$TabHeaderSkin.lambda$new$2(Unknown Source)
  at org.jabref.merged.module/com.sun.javafx.scene.control.LambdaMultiplePropertyChangeListenerHandler.lambda$new$1(Unknown Source)
  at org.jabref.merged.module/javafx.beans.value.WeakChangeListener.changed(Unknown Source)
  at org.jabref.merged.module/com.sun.javafx.binding.ExpressionHelper$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.scene.control.Tab.setText(Unknown Source)
  at org.jabref/org.jabref.gui.JabRefFrame.updateAllTabTitles(Unknown Source)
  at org.jabref/org.jabref.gui.exporter.SaveDatabaseAction.doSave(Unknown Source)
  at org.jabref/org.jabref.gui.exporter.SaveDatabaseAction.save(Unknown Source)
  at org.jabref/org.jabref.gui.dialogs.AutosaveUIManager.listen(Unknown Source)
  at jdk.internal.reflect.GeneratedMethodAccessor54.invoke(Unknown Source)
  at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  at java.base/java.lang.reflect.Method.invoke(Unknown Source)
  at org.jabref.merged.module/com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Unknown Source)
  at org.jabref.merged.module/com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Unknown Source)
  at org.jabref.merged.module/com.google.common.eventbus.Subscriber$1.run(Unknown Source)
  at org.jabref.merged.module/com.google.common.util.concurrent.DirectExecutor.execute(Unknown Source)
  at org.jabref.merged.module/com.google.common.eventbus.Subscriber.dispatchEvent(Unknown Source)
  at org.jabref.merged.module/com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Unknown Source)
  at org.jabref.merged.module/com.google.common.eventbus.EventBus.post(Unknown Source)
  at org.jabref/org.jabref.logic.autosaveandbackup.AutosaveManager.lambda$listen$0(Unknown Source)
  at java.base/java.util.concurrent.Executors$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)

[cakexxx]

JabRef 5.0--2020-03-06--2e6f433
Windows 10 10.0 amd64
Java 13.0.2

[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.