It looks like this issue still exists after the previous fix (in linked issues). Color returned is black.
----------System.out:(1/50)----------
Screen shot file: OnScreenRenderingResizeTest.png
----------System.err:(12/762)----------
java.lang.RuntimeException: Test failed at 0-0 rgb=0xff000000
at OnScreenRenderingResizeTest.checkBI(OnScreenRenderingResizeTest.java:226)
at OnScreenRenderingResizeTest.main(OnScreenRenderingResizeTest.java:174)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:578)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:125)
at java.base/java.lang.Thread.run(Thread.java:1591)
JavaTest Message: Test threw exception: java.lang.RuntimeException: Test failed at 0-0 rgb=0xff000000
JavaTest Message: shutting down test
STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Test failed at 0-0 rgb=0xff000000