This question of mine has had an edit suggested, which was improved by one of the reviewers. Because of this, both the suggested edit itself (revision 2) and the improved edit (revision 3) are added to the revision history.
I decided I like the suggested edit more than the improved one, so I'd like to rollback to revision 2. I get the familiar popup 'Are you sure you want to rollback', but when I confirm, the page reloads, but there is no rollback. (Normally, you'd see the new revision on top of the list.)
I double-checked with @rene in chat and it's happening for him as well. He mentioned that the suggested edit only added a tag - the rollback mechanism might be checking just the body and title of the question.
It might be that it's not intended at all to rollback to that revision, but then the rollback link should be disabled/hidden.
Based on a SEDE query I found another case where an improved tag-only edit cannot be rolled back to:
- Organizer.displayName is null for some users
- Compare String using tMap
- Rearrangement based on matching text in Excel?
It's not consistent, though, as for some other questions in that query (e.g. this one) the rollback works as intended.