Reload CLI operation cause XNIO007007 on server intermittently

#=================================================================================================================================
# first terminal
#=================================================================================================================================
./standalone.sh

#=================================================================================================================================
# second terminal
#=================================================================================================================================

cat > test.cli << EOF
/core-service=management/security-realm=ManagementRealm/server-identity=ssl:add(keystore-path=management.keystore,keystore-relative-to=jboss.server.config.dir,keystore-password=password,alias=server,key-password=password,generate-self-signed-certificate-host=localhost)
/core-service=management/management-interface=http-interface:write-attribute(name=secure-socket-binding,value=management-https)
reload
/core-service=management/management-interface=http-interface:write-attribute(name=secure-socket-binding)
/core-service=management/security-realm=ManagementRealm/server-identity=ssl:remove()
reload
EOF



cat > test.sh <<EOF
for i in {1..10} ; do
  echo "##################################"
  echo "#### Run test for the \$i time."
  echo "##################################"

  ./jboss-cli.sh -c --file=test.cli <<< "P" > log

  export COUNT=\`grep success log | wc -l\`
  echo "Successfully executed management operations: \$COUNT"
  if [  "x\$COUNT" != "x4" ] ; then
    echo "Breaking the loop - there is a failure"
    exit 1
  fi
done
exit 0
EOF
bash test.sh

16:12:45,844 ERROR [stderr] (management task-5) Exception in thread "management task-5" java.util.concurrent.RejectedExecutionException: XNIO007007: Thread is terminating
16:12:45,845 ERROR [stderr] (management task-5) 	at org.xnio.nio.WorkerThread.execute(WorkerThread.java:600)
16:12:45,845 ERROR [stderr] (management task-5) 	at io.undertow.protocols.ssl.SslConduit$5.run(SslConduit.java:1038)
16:12:45,845 ERROR [stderr] (management task-5) 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
16:12:45,845 ERROR [stderr] (management task-5) 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
16:12:45,845 ERROR [stderr] (management task-5) 	at java.lang.Thread.run(Thread.java:745)