Also, see this note from fiatjaf, who was doing some tests and seemed to find damus was running a version with the bug. At least, this is what they later claimed in the telegram thread.
Indeed, it is fixed on nostr.wine and broken on relay.damus.io
I personally find the Damus relay to have odd behavior (sometimes, at odd times) with the events it returns. I’m not in a position to provide reproducible examples, but knowledge of the bug is real.
Cc: fiatjaf (npub180c…h6w6)