Test java/awt/Robot/ModifierRobotKey/ModifierRobotKeyTest.java fails on Linux

Test name(s):java/awt/Robot/ModifierRobotKey/ModifierRobotKeyTest.java
JDK tested:9b73,9b72
OS tested:OEL 7.0, OEL7.1 , Windows ,OEL6.4
Is it a regression? No
Regression introduced in release/build: N/A
                                
Is it platform specific? Yes
                       
The is failure reproduced:OEL (Passes in Windows, OEL 6.4)

----------System.err:(16/1005)----------
java.lang.RuntimeException: FAIL: Canvas gained focus!: expected true, was false
at jdk.testlibrary.Asserts.fail(Asserts.java:536)
at jdk.testlibrary.Asserts.assertTrue(Asserts.java:486)
at ModifierRobotKeyTest.doTest(ModifierRobotKeyTest.java:137)
at ModifierRobotKeyTest.main(ModifierRobotKeyTest.java:59)
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:502)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:92)
at java.lang.Thread.run(Thread.java:745)

JavaTest Message: Test threw exception: java.lang.RuntimeException: FAIL: Canvas gained focus!: expected true, was false
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: FAIL: Canvas gained focus!: expected true, was false