left click, screen lock!!!

i have had this bug many many times over the past 6 months it last for multiples games sometimes and its 100 % random as far as i can tell. the left click only responds after 2 or three times clicking it. also the screen is locked permanently, and if i try any type of ping it becomes either a missing or an alert ping. (I'm assuming that all of this is from the left click being unresponsive or constantantly being activated when I'm not clicking it) has this happened to any1 else recently? i haven't seen posts about it since 2014. Riot pls pls fix (playing on a mac if that makes a difference)