[GAMEPLAY] Alt+Tab bug

I'm not sure if this has happened to many others, but it has happened to me many times. On most occasions I would occasionally check my skype by alt+tabbing out of the window, what the bug does is that when I alt+tab back into the game my left click would be disabled and cause me to pull up the ping menu. This is especially troublesome because not only does it disable mouse 1, it also disables you from firing skillshots and casting spells. Please look into this as it does cause quite a bit of trouble. Thank you for your time.