I have some browser tabs that have been open for several days.  A few of them show my reputation as either 2221 or 2231.*  My rep is currently 2165, for a drop of 66 from the high-water mark.  My # of posts edited and my progress toward earning a “Sportsmanship” badge also went down.
* I believe that I most recently refreshed these tabs between 2016‑08‑18 04:00 and 2016‑08‑18 06:15; i.e., a little under three days ago.  Of course the reputation score in the top bar may have updated since then.

I seem to recall that, if you (gain or) lose a lot of rep because a user was deleted (or because of voting fraud), you get an annotation to that effect in the “reputation” tab of your user profile page.  I don’t have anything like that.  My reputation history shows a delta of +9 (one upvote and one down) in the past four days.  This leaves an unexplained drop of 75.

From the “answers” tab I see that my answer to What is the next number in the series : 3, 24, 75, 175, 342, ?, with a score of 1, was deleted at 04:05 (on 2016‑08‑18):

  deleted recent answers

(Actually, it was the question that was deleted.)  This explains 10 points (and the other statistics).  If the vote breakdown on that answer was $\Large\frac{\color{green}{+9}}{\color{red}{-8}}$, that would explain $90-16=74$ points.   $\Large\frac{\color{green}{+7}}{\color{red}{-6}}~\color{green}{\checkmark}$ would explain $70-12+15=73$ points, but I really doubt that either of those happened.

This question may appear to be a duplicate of Disappearing reputation, but the answer there was that question(s) (where the OP got rep from answer(s)) had been deleted.  I have investigated that avenue and pretty much ruled it out.

I presume that, if there had been a widespread glitch, multiple people would have been affected, and this issue would have been raised here (in meta) by now; but I don’t see it.  Can anybody (presumably somebody with privileges) explain what happened to my reputation?


You also had an accepted answer on Riddle Me: What time is it? which was deleted for 65 reputation points. It shows on your Deleted Recent Answers list, but the date is the answer date, not the deletion date.

You also downvoted an answer recently for another -1, so:

2231 - 65 - 1 = 2165
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    $\begingroup$ Oh, the Deleted Recent Answers list shows the post date/time rather than the delete date/time!  That would explain it.  Thanks for looking into this for me, and for the explanation.  … … … … … … … … … … … … … … … … … … … Is it just me, or is that a terribly unintuitive and uninformative display? $\endgroup$ Aug 21 '16 at 3:37
  • $\begingroup$ @PeregrineRook: It is. But it's a consequence of the criteria for inclusion on the page. If your answer were older than 60 days, it wouldn't be shown. (It also wouldn't have lost reputation, which isn't really a coincidence.) $\endgroup$ Aug 21 '16 at 3:59
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    $\begingroup$ Arrgghhh!  Another 2 days and the rep would have "locked in" (to use Jarrod's words).  I lost the lottery on that one.    :-(    ⁠ $\endgroup$ Aug 21 '16 at 4:20

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