ADDITIONAL SYSTEM INFORMATION :
Darwin 17.7.0 Darwin Kernel Version 17.7.0: Thu Jun 21 22:53:14 PDT 2018; root:xnu-4570.71.2~1/RELEASE_X86_64 x86_64

A DESCRIPTION OF THE PROBLEM :
The test java/awt/Toolkit/RealSync/Test.java fails on MacOSX with the message: "Test failed: testPress"
The issue was also observed on Windows. The test passes on Linux.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
jtreg -ignore:quiet -v -a -xml -testjdk:"/Library/Java/JavaVirtualMachines/jdk-10.0.1.jdk/Contents/Home/" -javaoptions:"-Djava.awt.headless=false" test/java/awt/Toolkit/RealSync/Test.java

ACTUAL -
#section:main
----------messages:(5/230)----------
command: main Test
reason: User specified action: run main/timeout=6000 Test
Mode: othervm
Additional options from @modules: --add-modules java.desktop --add-exports java.desktop/sun.awt=ALL-UNNAMED
elapsed time (seconds): 44.66
----------configuration:(4/97)----------
Boot Layer
  add modules: java.desktop
  add exports: java.desktop/sun.awt ALL-UNNAMED

----------System.out:(0/0)----------
----------System.err:(40/4768)----------
WARNING: GL pipe is running in software mode (Renderer ID=0x1020400)
Test failed: testPress
Cause: Not pressed
Cause: - Focus owner: null
Cause: - Focused window: null
Events:
java.awt.event.ComponentEvent[COMPONENT_MOVED (100,100 200x200)] on frame0
java.awt.event.ContainerEvent[COMPONENT_ADDED,child=button0] on frame0
java.awt.event.ComponentEvent[COMPONENT_RESIZED (100,100 200x200)] on frame0
java.awt.event.ComponentEvent[COMPONENT_MOVED (100,100 200x200)] on frame0
java.awt.event.ComponentEvent[COMPONENT_MOVED (100,100 200x200)] on frame0
java.awt.event.ComponentEvent[COMPONENT_RESIZED (100,100 200x200)] on frame0
java.awt.event.ComponentEvent[COMPONENT_HIDDEN] on sun.lwawt.LWButtonPeer$JButtonDelegate[,0,0,75x29,invalid,hidden,alignmentX=0.0,alignmentY=0.5,border=com.apple.laf.AquaButtonBorder$Dynamic@34b55e55,flags=16777512,maximumSize=,minimumSize=,preferredSize=,defaultIcon=,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=0,left=2,bottom=0,right=2],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=false,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=b,defaultCapable=true]
java.awt.event.ComponentEvent[COMPONENT_SHOWN] on sun.lwawt.LWButtonPeer$JButtonDelegate[,0,0,75x29,invalid,hidden,alignmentX=0.0,alignmentY=0.5,border=com.apple.laf.AquaButtonBorder$Dynamic@34b55e55,flags=16777512,maximumSize=,minimumSize=,preferredSize=,defaultIcon=,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=0,left=2,bottom=0,right=2],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=false,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=b,defaultCapable=true]
java.awt.event.ComponentEvent[COMPONENT_RESIZED (0,0 75x29)] on sun.lwawt.LWComponentPeer$DelegateContainer[,0,0,75x29,invalid]
java.awt.event.ComponentEvent[COMPONENT_RESIZED (0,0 75x29)] on sun.lwawt.LWButtonPeer$JButtonDelegate[,0,0,75x29,invalid,hidden,alignmentX=0.0,alignmentY=0.5,border=com.apple.laf.AquaButtonBorder$Dynamic@34b55e55,flags=16777512,maximumSize=,minimumSize=,preferredSize=,defaultIcon=,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=0,left=2,bottom=0,right=2],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=false,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=b,defaultCapable=true]
java.awt.event.ComponentEvent[COMPONENT_RESIZED (62,27 75x29)] on button0
java.awt.event.ComponentEvent[COMPONENT_RESIZED (62,27 75x29)] on button0
java.awt.event.ComponentEvent[COMPONENT_MOVED (62,27 75x29)] on button0
java.awt.event.ComponentEvent[COMPONENT_MOVED (62,27 75x29)] on button0
java.awt.event.ComponentEvent[COMPONENT_SHOWN] on frame0
java.awt.event.WindowEvent[WINDOW_OPENED,opposite=null,oldState=0,newState=0] on frame0
java.awt.event.PaintEvent[PAINT,updateRect=java.awt.Rectangle[x=0,y=0,width=0,height=0]] on frame0
java.awt.event.WindowEvent[WINDOW_ACTIVATED,opposite=null,oldState=0,newState=0] on frame0
sun.awt.TimedWindowEvent[WINDOW_GAINED_FOCUS,opposite=null,oldState=0,newState=0] on frame0
java.awt.event.FocusEvent[FOCUS_GAINED,permanent,opposite=null,cause=ACTIVATION] on button0
java.awt.event.PaintEvent[PAINT,updateRect=java.awt.Rectangle[x=0,y=0,width=0,height=0]] on frame0
java.awt.event.PaintEvent[PAINT,updateRect=java.awt.Rectangle[x=0,y=0,width=200,height=200]] on frame0
java.awt.event.PaintEvent[PAINT,updateRect=java.awt.Rectangle[x=0,y=0,width=75,height=29]] on button0
java.awt.event.PaintEvent[PAINT,updateRect=java.awt.Rectangle[x=0,y=0,width=0,height=0]] on frame0
Pressing at java.awt.Point[x=162,y=127]
java.awt.event.MouseEvent[MOUSE_MOVED,(3,3),absolute(165,130),clickCount=0] on button0
java.awt.event.MouseEvent[MOUSE_MOVED,(3,3),absolute(165,130),clickCount=0] on button0
java.awt.event.FocusEvent[FOCUS_LOST,temporary,opposite=null,cause=ACTIVATION] on button0
sun.awt.TimedWindowEvent[WINDOW_LOST_FOCUS,opposite=null,oldState=0,newState=0] on frame0
java.awt.event.WindowEvent[WINDOW_DEACTIVATED,opposite=null,oldState=0,newState=0] on frame0
java.awt.event.PaintEvent[PAINT,updateRect=java.awt.Rectangle[x=0,y=0,width=75,height=29]] on button0
FAILURE MOMENT
java.awt.event.ComponentEvent[COMPONENT_HIDDEN] on sun.lwawt.LWButtonPeer$JButtonDelegate[,0,0,75x29,invalid,hidden,alignmentX=0.0,alignmentY=0.5,border=com.apple.laf.AquaButtonBorder$Dynamic@34b55e55,flags=16777512,maximumSize=,minimumSize=,preferredSize=,defaultIcon=,disabledIcon=,disabledSelectedIcon=,margin=javax.swing.plaf.InsetsUIResource[top=0,left=2,bottom=0,right=2],paintBorder=true,paintFocus=true,pressedIcon=,rolloverEnabled=false,rolloverIcon=,rolloverSelectedIcon=,selectedIcon=,text=b,defaultCapable=true]
java.awt.event.WindowEvent[WINDOW_CLOSED,opposite=null,oldState=0,newState=0] on frame0

---------- BEGIN SOURCE ----------
http://hg.openjdk.java.net/jdk9/dev/jdk/file/65464a307408/test/java/awt/Toolkit/RealSync/Test.java
---------- END SOURCE ----------

FREQUENCY : always