ADDITIONAL SYSTEM INFORMATION :
java version "11.0.1" 2018-10-16 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.1+13-LTS)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.1+13-LTS, mixed mode)

$ uname -a
Linux unit-959 4.15.0-38-generic #41-Ubuntu SMP Wed Oct 10 10:59:38 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

A DESCRIPTION OF THE PROBLEM :
java/awt/Frame/DecoratedFrameInsets/DecoratedFrameInsetsTest.java fails in KUbuntu (with KDE) with the message Insets are wrong java.awt.Insets[top=49,left=0,bottom=0,right=0].
Please note the test passes in Ubuntu with Gnome.

REGRESSION : Last worked in version 11.0.1

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
$ jtreg -ignore:quiet -v -a -xml -testjdk:/usr/lib/jvm/java-11-oracle -javaoptions:-Djava.awt.headless=false -timeoutFactor:2 test/java/awt/Frame/DecoratedFrameInsets/DecoratedFrameInsetsTest.java

ACTUAL -
#section:main
----------messages:(4/149)----------
command: main DecoratedFrameInsetsTest
reason: User specified action: run main DecoratedFrameInsetsTest
Mode: othervm
elapsed time (seconds): 1.435
----------configuration:(0/0)----------
----------System.out:(3/212)----------
Normal state insets: java.awt.Insets[top=49,left=8,bottom=8,right=8]
State 6 insets: java.awt.Insets[top=49,left=0,bottom=0,right=0]
State 6 back to normal insets: java.awt.Insets[top=49,left=0,bottom=0,right=0]
----------System.err:(14/1029)----------
java.lang.RuntimeException: Insets are wrong java.awt.Insets[top=49,left=0,bottom=0,right=0]
at DecoratedFrameInsetsTest.testState(DecoratedFrameInsetsTest.java:77)
at DecoratedFrameInsetsTest.main(DecoratedFrameInsetsTest.java:41)
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:566)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:115)
at java.base/java.lang.Thread.run(Thread.java:834)

JavaTest Message: Test threw exception: java.lang.RuntimeException: Insets are wrong java.awt.Insets[top=49,left=0,bottom=0,right=0]
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Insets are wrong java.awt.Insets[top=49,left=0,bottom=0,right=0]


---------- BEGIN SOURCE ----------
http://hg.openjdk.java.net/jdk/jdk11/file/1ddf9a99e4ad/test/jdk/java/awt/Frame/DecoratedFrameInsets/DecoratedFrameInsetsTest.java
---------- END SOURCE ----------

FREQUENCY : always