Disallow duplicate comments posted around the same time
#1,209 opened on Sep 25, 2023
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Description
Anecdotally, I've noticed an uptick recently in duplicate comments being posted in stories. For example: https://lobste.rs/s/bkw5u0/no_stale_bots#c_7jfizv and https://lobste.rs/s/bkw5u0/no_stale_bots#c_woz48w, and there was another pair on a recent story too (I'm not sure which one).
Seems likely this is a comment POST being received and processed by the server, but not making it back to the client or something like that. Ideally the server could catch this case and either abort the comment post or ideally simply lie to the client that the comment had been posted, claiming that the already-posted comment was actually the just-submitted comment. (Assuming the server even returns e.g. the comment URL - I haven't actually checked.)
It's unclear to me whether this is a recent problem or whether I just happen to have noticed it recently.