Not that it hinders me, but I'd just like to know what exactly is wrong. Recently I noticed that all sounds in the game except for those related to battle work properly. Menus, BGMs, chat, etc.

For instance, I'm fighting in a team. BGM is playing and the occasional chat bubble goes off, but no battle effects. If I were to click on a menu, however, for a brief moment sound effects from photon arts and whatnot will kick in, and then they're off again.