looks like the GC is starting up an unencrypted THsHaServer regardless of the instance.rpc.ssl.enabled config property. then it traces a constant stream of ERROR: Read an invalid frame size of -2140274429. Are you using TFramedTransport on the client side? because the monitor is trying to connect over SSL as configured.
this used to work, but maybe got lost in some GC refactor? i'm also looking into getting this case covered by automated tests.