@You : "...When a command like that is running, it should still be cancelable,...
I just tested over here and I can't reproduce an uncancelable fillet, I'd need to get an example file that demonstrates the problem in order to find out any more about what's going on..."


Hmm....this is strange...
I can confirm that more than a couple of times I found myself into the problem I described...

Ok. ASAP I try to recover one of those files where I had the issue and I will let you know.

Stay tuned.

Thanks.