Post History

For the question linked on 2021-01-06, the change was a deleted (spam) answer.  Unfortunately, if you can't see deleted answers you can't tell that's what happened, so I understand how that was confusing.  (We do want to improve how changes are reported on the question list, instead of everything just being "last activity", but we haven't gotten to it yet.)

On another community I just saw a recurrence of an existing bug: tag-only edits don't get reported correctly in the diff.  This is a known bug.  In the case I just saw, the first revision had one set of tags, the edit showed only the changes to tags (on both sides), but I could tell by looking at the two different versions.  I wonder if that's what happened in the cases you saw.

I'll ask the team to look into this bug; when it first came up there were other large changes in flight, but that's not the case now so I hope we can fix it.  (I have to hedge since I don't have the skills to fix it myself, so can't commit.  I'll try.)