FULL PRODUCT VERSION :
$ java -version
java version "1.8.0_112"
Java(TM) SE Runtime Environment (build 1.8.0_112-b16)
Java HotSpot(TM) 64-Bit Server VM (build 25.112-b16, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Darwin mac-20 15.6.0 Darwin Kernel Version 15.6.0: Fri Feb 17 10:21:18 PST 2017; root:xnu-3248.60.11.4.1~1/RELEASE_X86_64 x86_64

A DESCRIPTION OF THE PROBLEM :
The test java/awt/Modal/LWModalTest/LWModalTest.java fails with NPE Mac OSX/Java 8
It was not observed on Linux, Windows.
Please note there is a bug describing this issue which was closed as 'Cannot Reproduce' - https://bugs.openjdk.java.net/browse/JDK-7081081

The issue is intermittent, reproducibility ~20%
I could not reproduce this issue in standalone mode. It can be reproduced running the test package java/awt


ERROR MESSAGES/STACK TRACES THAT OCCUR :
#section:main
----------messages:(4/123)----------
command: main LWModalTest
reason: User specified action: run main LWModalTest
Mode: othervm
elapsed time (seconds): 4.459
----------configuration:(0/0)----------
----------System.out:(0/0)----------
----------System.err:(25/1342)----------
WARNING: GL pipe is running in software mode (Renderer ID=0x1020400)
java.lang.NullPointerException
        at LWModalTest.init(LWModalTest.java:89)
        at LWModalTest.main(LWModalTest.java:129)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:110)
        at java.lang.Thread.run(Thread.java:745)
java.lang.RuntimeException
        at LWModalTest.fail(LWModalTest.java:180)
        at LWModalTest.init(LWModalTest.java:101)
        at LWModalTest.main(LWModalTest.java:129)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:110)
        at java.lang.Thread.run(Thread.java:745)

JavaTest Message: Test threw exception: java.lang.RuntimeException
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException


REPRODUCIBILITY :
This bug can be reproduced occasionally.