Github user markap14 commented on the issue:
https://github.com/apache/nifi/pull/2739
@mcgilman I tried testing this. Created a Process Group with 2 processors.
One was STOPPED, the other DISABLED. Clicked on canvas to clear the selection.
Then clicked "Disable" in the Operate palette. Got back an error:
"92e58351-0163-1000-ab38-7947aeead66e is not stopped".---
