FULL PRODUCT VERSION :
JDK under test: C:\\Program Files\\Java\\jdk1.8.0_112
java version "1.8.0_112"
Java(TM) SE Runtime Environment (build 1.8.0_112-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.112-b15, mixed mode)

java version "9-ea"
Java(TM) SE Runtime Environment (build 9-ea+148)
Java HotSpot(TM) 64-Bit Server VM (build 9-ea+148, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 10.0.14393]

A DESCRIPTION OF THE PROBLEM :
The test javax/swing/JTree/4927934/bug4927934.java fails with the message "Root should be selected"
This issue was reproduced with JDK9
This failure was observed on Windows. It has never been observed on Linux, OSX.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
jtreg -v -a -xml -testjdk:C:/Java/jdk1.8.0_112 -javaoptions:-Djava.awt.headless=false -timeoutFactor:2 test/javax/swing/JTree


ERROR MESSAGES/STACK TRACES THAT OCCUR :
#section:main
----------messages:(4/125)----------
command: main bug4927934
reason: User specified action: run main bug4927934
Mode: othervm
elapsed time (seconds): 7.547
----------configuration:(0/0)----------
----------System.out:(4/80)----------
focusGained
key 39 pressed
waiting for selectionChanged...
Selected row: -1
----------System.err:(13/819)----------
java.lang.RuntimeException: Root should be selected
at bug4927934.main(bug4927934.java:102)
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:538)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:110)
at java.base/java.lang.Thread.run(Thread.java:844)

JavaTest Message: Test threw exception: java.lang.RuntimeException: Root should be selected
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Root should be selected


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
http://hg.openjdk.java.net/jdk8u/jdk8u/jdk/file/8b04ee324a1a/test/javax/swing/JTree/4927934/bug4927934.java
---------- END SOURCE ----------