I have Bubble Chat enabled in conjunction with a custom chat GUI. When under-13 players chat, FilterStringForPlayerAsync returns the correct string with non-whitelisted words filtered out (and I believe classic chat works properly too). However, their bubble chat is still displayed as if they are a 13+ player, only being restricted to the blacklist. I’m not sure if things look different from the under-13 player’s perspective.
I did post about it in a thread a while back, but not sure if it got acknowledged - It seems like a rather significant oversight (in terms of protecting kids’ privacy)