I provided an answer to this bounty question, which became the top-voted answer with 13 upvotes and 2 downvotes. My answer was posted after the bounty was posted.
The OP never accepted an answer, and the bounty expired about thirty minutes ago, but I haven't been awarded any rep and nothing has been marked as accepted. Is there a delay I'm not aware of?
You [the asker] do not accept an answer. Any answer that was a) provided after the bounty period started and b) has 2 or more upvotes is automatically accepted after 7 days. The bounty is subtracted from your [the asker's] reputation. The answerer is awarded half the bounty amount.
If this is a new solution to the bounties contribute to daily rep cap problem that people have been complaining about for some time, then that's fine. (i.e. if you only award the bounty just before midnight UTC.) But I can't find anything here on MSO that implies this.
Update: Looks like the bounty was awarded on the next hour (21:00 UTC). So maybe it's an hourly process.