Auto locks issue

Hello Riot, hope you guys had a good weekend. I have this issue where my screen just locks, for no reason, and I can't unlock it. Even if I click on the mini map to unlock it or to just look somewhere else in the map, the screen stays on my champ. I closed all my programs whenever I would play just to see if it would make any change, but it still happens.

I noticed that it often happens whenever I press my key to get back on my champ view (space bar). **The only way I can unlock it is by leaving the game **by pressing CTRL escape, then re click into the game. It will still be on lock until I pass my cursor on the mini map and click randomly on it. Then the game is back to normal, but I have to not use my key to get back on my champ, otherwise I will have to do the same process. It is really annoying when I'm in a fight...

Here I've sent you a link of a video I made. It will not show much except at 1min 11 the bug occurred. You see I'm locked in.

I hope you will be able to help me, have a good week!

Marika.