This isn't a big issue, but I was confused for about 5 seconds before I realized this was a bug. My apologies if this has already been submitted, but a cursory site + flaru + github search revealed nothing relevant for my keywords ("mention", "comment", notifications").
In my notifications, I see "[user] mentioned you in [post I haven't yet seen]".
Directly underneath is "Your comment. [Post time]. [Post Points]."
A user replied to this comment mentioning me, but the original comment isn't mine.
Windows/Firefox