Failed on Windows with a tier5 run, this run is JTREG_TEST_THREAD_FACTORY=Virtual so likely changes slightly the objects that survive in each region. It may be that this just needs to be excluded with ProblemList-Virtual.txt.

java.lang.RuntimeException: Regions selected for rebuild. G1MixedGCLiveThresholdPercent=25 no regions should be selected expected: true but was: false
at jdk.test.lib.Asserts.fail(Asserts.java:691)
at jdk.test.lib.Asserts.assertEquals(Asserts.java:204)
at gc.g1.TestMixedGCLiveThreshold.testMixedGCLiveThresholdPercent(TestMixedGCLiveThreshold.java:83)
at gc.g1.TestMixedGCLiveThreshold.main(TestMixedGCLiveThreshold.java:75)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:333)
at java.base/java.lang.VirtualThread.run(VirtualThread.java:329)