I came across a bunch of these applied auto edits where nothing appeared to have changed. Old and new AC are identical and there's no indication if something else was changed. However when you look at the raw data you'll notice that the "credited as" name was changed from being empty to be the same name as the artist/label/etc current name (not sure why this was done but...). This change is not displayed in the edit. The last link below shows that it also can be difficult to spot the change when the AC actually is different.

An improvement would be to change this so that it is displayed similar to how AC changes are displayed in e.g. "edit recording" edits. I'm guessing that the relevant part already is marked with orange if the edit still is open.

https://musicbrainz.org/edit/83725453 (identical artist AC)

https://musicbrainz.org/edit/83772328 (identical label AC)

https://musicbrainz.org/edit/83726618 (different AC)