Yesterday my reputation was reduced for an upvote reverse on this answer as witnessed by this summary:
Earlier, the upvote reversal showed in the question timeline and the points were deducted from my reputation. But now it's not showing in the question timeline yet the deduction still stands:
I believe this is a bug, but I would appreciate clarification if it's not. I don't see how the upvote could be reversed so long after the last edit to the question, because I thought upvotes were locked after a short period of time.
I also don't understand why the reversal isn't in the timeline, but I suppose that's by-design -- in which case, I'd appreciate a clarification.