Oh god yes. Facebook and Messenger have so many such bugs, coupled with general slowness and clunkiness. Having 80k employees would sound so much more reasonable if all of Meta's services worked really well; right now it seems more like they do the bare minimum.

I don't know if these things become fundamentally hard to fix at their scale, like it's possible that a "hide" button becomes too hard to properly implement if your feed suggestion algorithm has to handle millions of users at the same time. It's possible, but sounds hard to believe, because a lot of the quality has degraded in only a couple of years, and they haven't become orders of magnitude larger in that time.

Of course, it would be very reasonable to claim that they simply don't care. But their websites do keep changing, so it's also not like they have decided to halt development of this part of the UX and simply focused on doing advertising right.

Personally, I still suspect that regardless of their motives, there's a high degree of corporate inefficiency.