JDK-8214209 : Deadlock due to conflict between JavaFX and Accessibility Apps on MacOSX
  • Type: Bug
  • Component: javafx
  • Sub-Component: swing
  • Affected Version: 8u172
  • Priority: P3
  • Status: Open
  • Resolution: Unresolved
  • OS: os_x
  • CPU: x86
  • Submitted: 2018-11-05
  • Updated: 2021-03-05
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JDK 8
8-poolUnresolved
Related Reports
Relates :  
JDK-8262292 - JavaFX deadlocks if another app is using macOS Accessibility API in the background
Description
ADDITIONAL SYSTEM INFORMATION :
MacOS versions:
10.11.6 El Capitan	
10.12.6 Sierra
10.13.1 High Sierra	
10.14 Mojave	

JDK:
1.8u121
1.8u144
1.8u162
1.8u181


A DESCRIPTION OF THE PROBLEM :
We have a single threaded JavaFX application operating as a plugin under a Netbeans-based IDE. We've noticed that when running our application on MacOSX and using MacOS Accessibility applications (i.e. Magnet, HyperDock, VoiceOver) in the background, our application hangs indefinitely either at start-up or after the first UI interactions. We have narrowed the deadlock behavior to the following: whenever we call setScene() from our application it gets called on the Swing thread while Accessibility applications also make calls on Swing threads. This results in blocking the event queue which then causes a deadlock.


CUSTOMER SUBMITTED WORKAROUND :
close all Accessibility apps from the Accessibility Panel 

FREQUENCY : always
Comments
Reproducer from another submitter, JDK-8262292
24-02-2021
No response was received from the submitter. As there is not enough information in this report to make headway it is being closed. If this issue is seen, please open a new report with all necessary information. This report ID can be referenced.
22-11-2018
Requested Submitter to provide reproducible JavaFX program and steps to reproduce the same. Marking as Incomplete pending for more information.
06-11-2018