I have that now and then as well. I have to go to the task to kill it and then rerun and it usually runs fine.
It's extremely difficult to watch these as they happen and try to get the information needed to help troubleshoot. If you are able to get more information or catch them before I can, I'm up for anyone trying to continue to troubleshoot the issue. I'm sure they will need log files, support bundle, what connections you are using, etc. to help with the initial troubleshooting. I know that's what I started with. Maybe some of your info can help shed some light further on this issue.
Glad to see it's other folks that have similar issues :)