If you stay AFK for a while without doing anything and send a message in the chat, the FPS drops to 0fps just by sending the message.

I've tested this on two devices, with various versions, and it keeps popping up. It's very annoying; it only happens when you're away for a few seconds and send something to the chat. I assume this problem doesn't occur on more powerful computers, but it does affect those without those computers.

I should clarify that this didn't occur on versions prior to 1.21.5. I assume the problem started before 1.21.4 or 1.21.5. Also, if you're wondering if my interfaces also crash when I open them after being away, that doesn't happen; it only happens with the chat.