Screen Scroll/Mouse Glitch [Mac]
I am playing on the mac client, and ever since the latest patch, whenever I try to play a custom game I experience an irritating glitch, in which my left click doesn't work unless I double click, and I can't scroll the camera with the mouse, I need to double click on the minimal to move the screen. It has happened twice in a row now so I'm pretty sure it's consistent. I don't know if it happens in real games, I've only played custom games since the patch, since experience has taught me to test things out on custom games after a patch, because frequently things don't work properly on the mac client, and I'm scared to try a real game (I'd obviously be pretty screwed if this happened in a PvP game). Not sure if this is Mac specific or not, but if it's not fixed, I won't be able to play at all, that's not the sort of glitch you can just sort of play around.
Edit: for those still having this problem, go to the preferences in game and set your display from fullscreen to borderless (this should look identical if you are at the proper resolution). Then, when this issue arises, use F3 or fn+F3 depending on how you've set up your keyboard, which should tab you out of the game and let you select another application. Do so, click on it, then tab back to league. If you do this once or twice, it should resolve the issue. I personally don't have the issue nearly as often, but when I do, this always fixes it. It's annoying that after so many months this still hasn't been fixed, but it's still nice to have a quick way to resolve it.