Alt+Tab and LoL camera

Sup all. Recently when i Alt+Tab League of Legends, my camera insta lock after i press space to center on my champion and cannot unlock it, the only way i have is to Alt+Tab again, press the mini map to unlock it, and when i press space, the camera insta lock again, an to proceed to unlock it i need to do the process again (I can't press Y or the camera setting next to the mini map) Sometimes if a don't press the mini map i can't use spells and my clicks are pings.