This is a Quantum part of the issue described in RT-16804. The visual flash can be eliminated if Quantum supports synchronous painting upon receiving the REPAINT event from Glass, or in the implementation of the Pen.paint() method.
            
- relates to
- 
                    JDK-8089313 Transparent stage resize flickers on Mac -           
- Closed
 
-         
- 
                    JDK-8119109 Mac: When a window first shows up it shows black content, resulting in unpleasant visual flash -           
- Closed
 
-