Apologies if it's in the wrong category, or maybe not even a bug, since it's such a small issue, but I thought I'd mention it anyway.
I just "activated" a whole bunch of Subeautique achievements, and while all of them fall under the same "Achievements" header in the Events sidebar, 1 of them, the Romero Post Mortem one, seems to fall under the "Forums" header.

It is because of the "Post" in the achievement title. I have asked about it before and the way that the alert system is built currently, there is no easy fix.
Dexter by ❤