We see failures in test gc/shenandoah/generational/TestOldGrowthTriggers.java on multiple platforms (e.g. Linux x86_64).
UseCompatObjectHeaders is enabled when running the test. (the test was always run inside the whole HS :tier2 )

Error is

java.lang.RuntimeException: 'Trigger (Old): Old has overgrown' missing from stdout/stderr
               at jdk.test.lib.process.OutputAnalyzer.shouldContain(OutputAnalyzer.java:253)
               at TestOldGrowthTriggers.testOld(TestOldGrowthTriggers.java:90)
               at TestOldGrowthTriggers.main(TestOldGrowthTriggers.java:99)
               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.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:335)
               at java.base/java.lang.Thread.run(Thread.java:1447)