I'm new here and I've just found a small bug in tag synonyms. This bug appears in both main and meta Math Stackexchange.
Some tags have synonyms, such as, in Math Stackexchange, tag span is a synonym for tag linear-algebra, and counting is a synonym for combinatorics. The tag synonyms seems don't display the right quantity of questions. For example, tag counting displays "0 questions" in the tag filter while displays "49.6k questions" when hovering. The same bug also appears in Meta Stack Exchange, such as tag comments as a synonym for tag comment.
I don't know this bug appears in other Stackexchange sites or is mentioned before. I wish the moderator to pay attention and reply to my question.