In my profile it says my cake day is today (June 13), but it was displaying a cake icon on my comments all day yesterday (June 12).
The icon was a black and white outline so I thought maybe it was showing it the day before on purpose so other people would see ahead of time, and that it would turn colorful on the actual day. But then midnight hit and it disappeared, so it must be a bug instead.
That sounds plausible to be one problem, but it’s also weird that it’s different in two different places. There’s some duplicate code that probably ought to be consolidated.
Assuming that @SorteKanin@feddit.dk is correct about this pull request merge, instances running v0.4.19, which was released last week, don’t have this problem anymore.