(process) java/lang/ProcessHandle/OnExitTest.java failed with "Process A should not be alive expected [false] but found [true]"

[TestNG] Running:
  java/lang/ProcessHandle/OnExitTest.java

  Child Output: args: 20476 [stdin]
  Child Output: 20476:1 stdin start
  Child Output: 20476:2 pid 20476
  Child Output: args: 20510 [stdin]
  Child Output: 20510:1 stdin start
  Child Output: 20510:2 pid 20510
  Child Output: 20510:3 waitpid true
test OnExitTest.peerOnExitTest(): failure
java.lang.AssertionError: Process A should not be alive expected [false] but found [true]
at org.testng.Assert.fail(Assert.java:94)
at org.testng.Assert.failNotEquals(Assert.java:496)
at org.testng.Assert.assertEquals(Assert.java:125)
at org.testng.Assert.assertEquals(Assert.java:178)
at OnExitTest.peerOnExitTest(OnExitTest.java:255)
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:563)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:85)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:639)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:821)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1131)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:124)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:108)
at org.testng.TestRunner.privateRun(TestRunner.java:773)
at org.testng.TestRunner.run(TestRunner.java:623)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:357)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:352)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:310)
at org.testng.SuiteRunner.run(SuiteRunner.java:259)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1185)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1110)
at org.testng.TestNG.run(TestNG.java:1018)
at com.sun.javatest.regtest.agent.TestNGRunner.main(TestNGRunner.java:89)
at com.sun.javatest.regtest.agent.TestNGRunner.main(TestNGRunner.java:54)
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:563)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:110)
at java.base/java.lang.Thread.run(Thread.java:844)
args: 20880 [exit, 0]
20880:1 exit 0
 javaChild done: Process[pid=20880, exitValue=0], exitStatus: 0
args: 20885 [exit, 1]
20885:1 exit 1
 javaChild done: Process[pid=20885, exitValue=1], exitStatus: 1
args: 20900 [exit, 10]
20900:1 exit 10
 javaChild done: Process[pid=20900, exitValue=10], exitStatus: 10
test OnExitTest.test1(): success
 spawned: 20912
 subprocess count: 0, waiting for 9
 subprocess count: 1, waiting for 9
 subprocess count: 3, waiting for 9
 subprocess count: 3, waiting for 9
 subprocess count: 3, waiting for 9
 subprocess count: 3, waiting for 9
 subprocess count: 3, waiting for 9
 subprocess count: 8, waiting for 9
 subprocess count: 9, waiting for 9
whenComplete: pid: 20929, exception: null, thread: Thread[ForkJoinPool.commonPool-worker-9,10,system], elapsed: PT0.302491S
whenComplete: pid: 20931, exception: null, thread: Thread[ForkJoinPool.commonPool-worker-9,10,system], elapsed: PT0.305025S
whenComplete: pid: 20926, exception: null, thread: Thread[ForkJoinPool.commonPool-worker-9,10,system], elapsed: PT0.305423S
whenComplete: pid: 20930, exception: null, thread: Thread[ForkJoinPool.commonPool-worker-9,10,system], elapsed: PT0.633405S
whenComplete: pid: 20919, exception: null, thread: Thread[ForkJoinPool.commonPool-worker-9,10,system], elapsed: PT0.635593S
whenComplete: pid: 20927, exception: null, thread: Thread[ForkJoinPool.commonPool-worker-11,10,system], elapsed: PT0.635642S
whenComplete: pid: 20932, exception: null, thread: Thread[ForkJoinPool.commonPool-worker-11,10,system], elapsed: PT0.995437S
whenComplete: pid: 20915, exception: null, thread: Thread[ForkJoinPool.commonPool-worker-11,10,system], elapsed: PT0.996817S
whenComplete: pid: 20918, exception: null, thread: Thread[ForkJoinPool.commonPool-worker-11,10,system], elapsed: PT0.997342S
after onExit:pid 20915, alive: false; parent: Optional.empty, []
after onExit:pid 20918, alive: false; parent: Optional.empty, []
after onExit:pid 20919, alive: false; parent: Optional.empty, []
after onExit:pid 20927, alive: false; parent: Optional.empty, []
after onExit:pid 20930, alive: false; parent: Optional.empty, []
after onExit:pid 20932, alive: false; parent: Optional.empty, []
after onExit:pid 20929, alive: false; parent: Optional.empty, []
after onExit:pid 20931, alive: false; parent: Optional.empty, []
after onExit:pid 20926, alive: false; parent: Optional.empty, []
test OnExitTest.test2(): success