pressing my skill and portal at the same time makes my and everyone thats is in my lobby game crash

there is a crashing bug that i have notice and me being an internalist and using hex blast that is bound to my left click, if i go to press my portal but miss slightly and press the portal again while the skill is going off it makes my game crash aswell as anyone that is in my lobby. This happens everytime without fail i have test it just to confirm.