The test java/awt/FullScreen/FullScreenInsets/FullScreenInsets.java fails with the following output :

#section:main
----------messages:(5/207)----------
command: main FullScreenInsets
reason: Assumed action based on file name: run main FullScreenInsets
Mode: othervm
Additional options from @modules: --add-modules java.desktop
elapsed time (seconds): 27.746
----------configuration:(3/40)----------
Boot Layer
  add modules: java.desktop

----------System.out:(0/0)----------
----------System.err:(17/961)----------
metalEnabled=1
Incorrect pixel at 0x0 : ff02ff00 ,expected : ff00ff00
Incorrect pixel at 0x0 : ffff0100 ,expected : ffff0000
Incorrect pixel at 0x0 : ff00ff02 ,expected : ff00ff00
java.lang.RuntimeException: Test failed
at FullScreenInsets.main(FullScreenInsets.java:93)
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:564)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:832)

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

STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Test failed
The failure was not observed on OpenJDK builds jdk-14-ea+33_osx-x64, jdk-15-ea+7_osx-x64

The reproducibility: 100%
Steps to reproduce:
$ jtreg -Dsun.java2d.metal=true -testjdk:[path_to_+lanai_home] test/jdk/java/awt/FullScreen/FullScreenInsets/FullScreenInsets.java