[Gameplay] Locked into Free Cam Mode

I generally prefer to play in locked cam mode, because I find it easy to lose track of my champion when the camera isn't focused directly on them. But obviously will click on the minimap from time to time to get a quick view of a team fight I might be walking to or whatever. And it is to my understanding that after this is done, the camera is naturally supposed to snap back to your champion if free cam mode has not been activated. Well in my recent games, occasionally, when I click on the minimap, I'm immediately locked into free cam mode with no escape. I press "Y" which is the assigned cam toggle hotkey, and it has no effect. The first few times it happened, I simply clicked on my champion's location from the minimap and the camera locked onto them again. But in the last game I played I could not turn off free cam mode, no matter how hard I tried, and it stayed that way until the end of the game. In my confusion I made my team lose a fight and then the game. This has become too big of a problem for me to ignore it. It's a real pain, and I'd like some kind of solution.