It occasionally runs into the camera lock settings in the game. Sometimes it could be restored by just click it once more, but sometimes though I was clicking it crazy (also with the hotkey default Y), it would just remain locked and all that I can do is just to leave the game and reconnect.
This is painful in the ranked game. I have to stall for about 1 min or more to get rid of this locking screen.
Riot plz delete it. At least fix the bug that makes me sick