Re: JavaFX Application Thread is recursively re-entrant into Eventhandler handle() method under some circumstances

I am reading your stack trace but I defintely never mentioned the double invocation to handle that I see there are evidencing anything. The issue is the value of debugCounter at a two certain moments in the application - in the two calls to showDebugInformation.  Although the proof that I am

Re: JavaFX Application Thread is recursively re-entrant into Eventhandler handle() method under some circumstances

I did not say it was another Thread. In fact, I said it was the Java Application Thread itself- being recursively re-entrant. Specifically, at the time the MOUSE_EXITED_TARGET event is generated, the Java Application Thread has a choice- continue proocessing the EventHandler#handle method

Re: JavaFX Application Thread is recursively re-entrant into Eventhandler handle() method under some circumstances

I see nothing special in the stack trace. When you remove the component, a new MouseEvent *must* trigger (MouseEvent.EXITED) as it always needs to match with MouseEvent.ENTERED. So, the call to 'remove' triggers a new event, which gets handled by the same handler. It is indeed entered

Re: JavaFX Application Thread is recursively re-entrant into Eventhandler handle() method under some circumstances

Hi All, I spent some time refactoring the program which displays this bug. It's now small enough to share the source in an email, but it is very very dense and the proof of bug, one  specific line to standard I/O, requires the source code to be read and understood in order to see the bug. As