ZOrder Unit test fails at RedHat 8.0,

Steps to Reproduce
-------------------
1)Run the Attached "Test.java" file which is the Unit Test Case for Zorder
2)A frame Comes up on screen
3)First few tests requires manual interaction,Follow the instruction in Displayed Frame to go Ahead
4)Few Automatic test becomes fails and throws following Exception.

  

java.lang.RuntimeException: The test failed: failed
        at Test.testLightAndHeavyManual(Test.java:639)
        at Test.testLightAndHeavy(Test.java:471)
        at Test.testHeavyToSwingContainersSwing(Test.java:271)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at Test.main(Test.java:29)



java.lang.RuntimeException: Can't make TestHeavyChild[4,59,5,22x23,label=4] focused, current owner is null
        at Test.makeFocused(Test.java:553)
        at Test.testLightAndHeavyAutoFocus(Test.java:505)
        at Test.testLightToHeavyContainersHeavyweightAutoFocus(Test.java:347)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at Test.main(Test.java:29)