This question had two close votes with reason "off-topic because ... missing details". I mistook it for a duplicate (of this question) and voted to close it for that reason, unaware that I'm now able to close probability questions as duplicates with a single vote.
The first problem is that the close notice said that three people had voted to close the question as a duplicate, which was not true; the others had voted to close for a different reason, but this was not apparent from the close notice.
I then realized that the question wasn't a duplicate after all and "nominated" it for reopening, and it was immediately reopened. (By the way, this is not what one usually expects when "nominating" something.)
The second problem is that the other two close votes were now gone. That seems like a bug, since they had nothing to do with mine. This would even be undesirable if they'd had the same reason, but especially if they had a different reason I really shouldn't be allowed to "clear" the close votes like that just because I can close questions as duplicates.