Once Remove Cover Art is clicked, apparently the action can't be canceled. The resulting dialog doesn't confirm the removal, it asks about a second operation: Whether the file also should be permanently deleted from disk.
But whether the response to "delete file" is Yes or No, the cover art always gets removed from the track. There is no actual confirmation of whether Cover Art should be discarded from the track.
AND: The Remove Cover Art action can't be cancelled. The close-dialog X is interpreted as proceeding with the cover art removal. I think the X should be a full stop, do NOTHING except bail out of the action.
Also, it would be good if the dialog had a third CANCEL button.
This can lead to a serious problem because it can be a huge challenge to restore the "oops" removed cover art. Quick Find relies on a tag-to-file naming formula that doesn't always apply to the situation (maybe 20% of my tracks can use it). The cover art might not still (or ever) be on the Internet. On the local drive, the name of the cover art file might be a tad mysterious to re-locate (the reason Quick Find can't find it). Or, it can be a huge job: My Cover Art folder has more than 12 thousand files, not easy to wander around looking for the one I just "lost".