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I recently reviewed several tag wikis and wiki excerpts that you proposed. Some I accepted, others I accepted with edits, and a few others--including one long one--I declined. In all cases I provided explicit reasons. Thus, if there is any bug here it would be that those reasons were not communicated back to you by the system.
To hunt down what's going on, ...
9
Association bonuses (and bounties, had you had any) don't count toward the total. It comes from upvotes (+10 per answer vote, +5 per question), accepted answers (+15), and the odd +2's you get for stuff like suggested edits being accepted (eventually they don't count any more either), and accepting an answer yourself. (turns out I was wrong about that last ...
8
You ask about earning reputation for posting comments. Because comments are "second-class citizens" on SE, they do not accrue reputation and you are not notified of votes on them. The only thing they can actually do for you is earn you the Commentator Badge and Pundit Badge. By virtue of their absence, they can indirectly help others earn the Tumbleweed ...
8
Quite a few badges aren't in the tracking list. (There are about 15 badges I don't have but only 4 show up that I can choose between for tracking)
Some of those at least will probably be for reasons of overhead (it would be too hard to keep doing the calculation every time you load your profile).
Some will be absent because you don't really "progress" ...
7
There's a grace period after closure where an answer can still be accepted (however the Post Your Answer button becomes disabled, so you have to be clever enough to find a way around that).
In this case the posting of the answer came so close in time after closure that the button was probably still working at that moment.
7
You have downvoted a few times - sure, you then changed the votes to be upvotes, but the system recorded those downvotes, making you eligible for the badge.
6
There were more than 500 entries because the criterion for sending late answers to the queue has changed.
Before the change only late answers from users with reputation up to 10 had their answers sent there; now the threshold is 50. With this new criterion, many old and late answers posted by users with reputation ranging from 10 to 50 were sent ...
6
It's by design. You control the order by clicking one of the three options at the right in a banner preceding the answers:
6
The ghost wiki excerpt eventually disappeared, even though I am not sure if this happened on its own or was a result of something me or @gung did (see here).
I was not able to edit https://stats.stackexchange.com/posts/324506/edit -- presumably such "abandoned" posts are locked which makes sense. The apparent bug was not that this abandoned post could be ...
5
Probably not a bug, but I hope this answer can help you narrowing down your issue.
First of all, one needs to understand what is a 'day' in Stack Exchange and realize that badges like Enthusiast and Fanatic are awarded based on it. See:
What is an SE "day"? When does each day start?
Basically, a day starts at 0 hour from UTC time. Then, one can ...
4
Note also, as suggested, I asked this question on SE meta, and the answer there was
These badges are intentionally not available in the badge progress selector because they would require additional UI to select which queue you wanted to track which is simply not worth implementing at this time given that you can easily track these in each queue ...
2
When merging tags, the tag wiki (and excerpt) are transferred to the destination tag only if the destination tag does not already have a wiki. This behavior allows tags to be renamed via merging while avoiding the danger of potentially destroying a useful wiki.
After merging, the old tag still exists for a brief period - there are no questions in it, but ...
Only top voted, non community-wiki answers of a minimum length are eligible