I noticed something odd in the sidebar just now: an ad for "01" bounties with no total bounty amount. So I went to check it out, and found this:
After hard refreshing, this remains. I checked my ignored tags, and they're not set to hide questions.
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For some context: I had a bounty on Which Dragon Magazine issue did this unusual rat-like race appear in? that the revision history says I awarded at 00:46:13Z (the "Z" means "UTC+0"). At the time, it was the last bounty active on the site. You posted this at 02:58:46Z.
I'd say "caching" but 2 hours is a long time for caching on the featured tab.
answered Jan 3 '17 at 3:51