Left click/Scroll wheel not working in item shop

So I get back to league after a few month break and when I go to the item shop and left click items to select them to see where they build or just to see the next item I need to purchase to build said item it buys it instantly much like a correct right click would. Also right click does absolutely nothing in the item shop and well and scroll not working at all. To say the least this bug is very frustrating. Oddly enough the mouse works perfectly fine outside of the shop. I'm using a Steelseries rival 700 mouse and I don't have any custom settings for league. Any help would be very appreciated, thanks in advance!