With JBIDE-11831 the situation with stopping remote servers is now improved, but it's still not ideal.
If the shutdown command fails we display an error: Server XX failed to stop. If you try again, it does the same. If you try for the third time, it will keep stopping until the timeout is reached and then a message is displayed: Server ... is not responding. Would you like to terminate the server or keep waiting?
I hit terminate and nothing happens.
Also, this message is accompanied by an empty error.