ADDITIONAL SYSTEM INFORMATION :
Microsoft Windows [Version 10.0.17134.165]

JDK under test: C:\\Program Files\\Java\\jdk-10.0.2
java version "10.0.2" 2018-07-17
Java(TM) SE Runtime Environment 18.3 (build 10.0.2+13)
Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.2+13, mixed mode)

A DESCRIPTION OF THE PROBLEM :
The test java\awt\MouseInfo\ComponentMousePositionTest.java fails with the message "Component.getMousePosition() returned null result inside Component"
The issue was observed Windows. It was not observed on MacOSX, Linux

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
>java -jar jtreg\lib\jtreg.jar -ignore:quiet -v -a -xml -testjdk:"C:\Program Files\Java\jdk-10.0.2" -javaoptions:"-Djava.awt.headless=false" test\java\awt\MouseInfo\ComponentMousePositionTest.java

ACTUAL -
#section:main
----------messages:(5/219)----------
command: main ComponentMousePositionTest
reason: User specified action: run main ComponentMousePositionTest
Mode: othervm
Additional options from @modules: --add-modules java.desktop
elapsed time (seconds): 2.736
----------configuration:(3/43)----------
Boot Layer
  add modules: java.desktop

----------System.out:(0/0)----------
----------System.err:(14/1107)----------
java.lang.RuntimeException: Test failed: Component.getMousePosition() returned null result inside Component
at ComponentMousePositionTest.changeMousePosition(ComponentMousePositionTest.java:76)
at ComponentMousePositionTest.main(ComponentMousePositionTest.java:116)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:115)
at java.base/java.lang.Thread.run(Thread.java:844)

JavaTest Message: Test threw exception: java.lang.RuntimeException: Test failed: Component.getMousePosition() returned null result inside Component
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Test failed: Component.getMousePosition() returned null result inside Component

---------- BEGIN SOURCE ----------
http://hg.openjdk.java.net/jdk10/jdk10/jdk/file/777356696811/test/java/awt/MouseInfo/ComponentMousePositionTest.java
---------- END SOURCE ----------

FREQUENCY : always