Can not Bind Left Click to Movement [Gameplay]

I was playing an aram game, then all of a sudden, I could not move. I died, and discovered I could move with the right click. I went to hotkeys and to player movement, and MB2(Right click) was set as Set 1, and Set 2 was blank. I went to unbind it, which worked, but then when I pressed my left click, to bind, it would not and does not acknowledge the left mouse button being pressed, for binding, was able to bind my middle mouse button MB3.

I can left click to upgrade abilities, open the shop, target enemies, move inventory, ping, and interact with the game menus, including clicking through the hotkey window with left clicking, but it will not let me bind MB1, my left click to any binding what so ever.

I restarted my client as well. Also I reset everything to default as well. When I do restart the client, and open bindings it automatically binds player movement to MB2, even if i left it unbound prior to restarting.

Well, still no response, but what I did was edit the input.ini manually... which worked, but that clearly is a bug, further I switched my mouse buttons with this program i have, and even then the game keybinding refused to except whatever was MB1 as bindable. So for instance when my Left click became MB2 and my Right Click became MB1, the game refused to bind MB1 even though I changed which button was MB1, therefore showing something is wrong with the client itself.