There was a recent fix to javax/swing/text/DefaultEditorKit/4278839/bug4278839.java as
JDK-8345547: test/jdk/javax/swing/text/DefaultEditorKit/4278839/bug4278839.java fails in ubuntu22.04

 passed true Expected position 1 actual position 1
 passed false Expected position 5 actual position 8
 passed false Expected position 8 actual position 9
 passed false Expected position 9 actual position 13
 passed false Expected position 13 actual position 16
 passed false Expected position 16 actual position 17
 passed false Expected position 17 actual position 17
 passed false Expected position 16 actual position 16
 passed false Expected position 13 actual position 13
 passed false Expected position 9 actual position 9
 passed false Expected position 8 actual position 8
 passed false Expected position 5 actual position 5
 passed false Expected position 1 actual position 1
 passed false Expected position 0 actual position 0
----------System.err:(11/585)----------
java.lang.RuntimeException: Test failed.
at bug4278839.main(bug4278839.java:137)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:565)
at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
at java.base/java.lang.Thread.run(Thread.java:1447)

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.