I happened to notice that this question which I had previously answered has been deleted. That's perfectly fine by me, and I don't mean to question the deletion itself in any way.
What I find odd is that my answer which got deleted alongside (of course) is now marked "deleted by owner" and has a +1 "undelete" count alleging that I "voted to undelete". Thing is that I have not taken either action: I did not delete my own answer, and I did not vote to undelete it. FWIW the other two answers to the same question are simply marked "deleted" and have no "undelete" votes.
This does not appear to be common behavior, as far as I can tell by looking at similar situations. Can't help but wonder what's different in this particular case.