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Public timeline gap followed by 31 duplicates in a row #7666
Not entirely sure what happened exactly, but I stepped away from my computer for a few minutes and came back to this:
This isn't the first time something similar has happened, and it usually happens after a period of inactivity, and it goes away when refreshing the page. Seems to occur only recently, so I'd guess it was introduced sometime after 2.4.0rc4 at minimum.