Mint 20: When purging or downgrading foreign packages, I'm dropped at a shell prompt after the command finishes

[hamishmb]

After purging/downgrading foreign packages I'm dropped at a shell prompt instead of the dialog closing. Not clear if this is intended, but it doesn't seem like great user experience.

[xenopeek]

This is reproducible with mintsources 2.0.5. The prompt just sits there, without a blinking cursor, waiting for the user to close the dialog. It would be nicer if there is a notice like "You may now close the dialog" or something after the command finishes.

[hamishmb]

Yeah, I mean you're already doing a somewhat scary thing as instructed by the upgrade guide - it'd be even worse as a new user if something like this happened.

[hamishmb]

Extra question: is this a root prompt then that you're dropped at?