EAP 7.1 shutdown blocked by DistributableSessionManager.stop

Issue

• Server shutdown is stalled

"ServerService Thread Pool -- 107" #2334 prio=5 os_prio=0 tid=0x000000001aee0000 nid=0x53e8 waiting on condition [0x00007fad3b6f0000]
   java.lang.Thread.State: WAITING (parking)
    at sun.misc.Unsafe.park(Native Method)
    - parking to wait for  <0x00000006dc2b7ae8> (a java.util.concurrent.locks.StampedLock)
    at java.util.concurrent.locks.StampedLock.acquireWrite(StampedLock.java:1119)
    at java.util.concurrent.locks.StampedLock.writeLockInterruptibly(StampedLock.java:413)
    at org.wildfly.clustering.web.undertow.session.DistributableSessionManager.stop(DistributableSessionManager.java:90)
    - locked <0x00000006dc2b7ac0> (a org.wildfly.clustering.web.undertow.session.DistributableSessionManager)
    at io.undertow.servlet.core.DeploymentManagerImpl$3.call(DeploymentManagerImpl.java:599)
    at io.undertow.servlet.core.DeploymentManagerImpl$3.call(DeploymentManagerImpl.java:589)
    at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)
    at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
    at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
    at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction$$Lambda$1234/700340308.call(Unknown Source)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1501)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction$$Lambda$1235/160882575.call(Unknown Source)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1501)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction$$Lambda$1235/160882575.call(Unknown Source)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1501)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction$$Lambda$1235/160882575.call(Unknown Source)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1501)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction$$Lambda$1235/160882575.call(Unknown Source)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1501)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction$$Lambda$1235/160882575.call(Unknown Source)
    at io.undertow.servlet.core.DeploymentManagerImpl.stop(DeploymentManagerImpl.java:603)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.stopContext(UndertowDeploymentService.java:139)

• Applications cannot be disabled or replaced once they have been running and serving users