Today at 10:43:14 PST Nightbot siddenly re-read chat messages posted over 2 hours ago and executed all commands that it could find once again, which messed up the chat. See screenshot of the chat log below, comments read twice are marked in yellow (same timestamp).
Likely was a temporary issue, I speculate that the servers could have restarted and it made Nightbot read all the messages again, thereβs nothing you can do about that on your side.