“x liked your photo” bug?

So, I had the most diabolical heartbreak months ago, and now I am finally healing and moving on. The thing is we had this shared album (we ve had it for over a year) and in that time i NEVER got any notification from likes or bla bla. We also didnt add photos since late 2024. Lately, perhaps a week ago I looked at it, and noticed he unsuscribed. But today, I randomly get a notification late at night of him liking a photo from the album. Which I think is a bug, but this gotta be the most specific and targeted bug ever. Like are we serious, has anyone else had this problem too