Really odd Caitlin bugs

During a fight tried to cast my E and it opened the shop. Only happened once, I have no idea how or why. I checked the key bindings and there's no reason it should have happened. Don't think I moved my mouse in the bottom left corner and clicked on it either.

Also had a few issues with casting my ult where it would either cancel the cast despite having vision on them, or (and this happened more than once) flat out change the target I was aiming at. Now the target changing I initially assumed was just from accidentally targeting the wrong person, but it happened again, and that time the targets were both a significant distance apart (From the ramp leading up to raptors to the bush parallel to mid in river).

All of this happened in a single, indescribably frustrating game.