Infinite Slow Motion Bug

a). launched a ressources mission
b) quick saved at the start of the map
c) selected my heavy soldier
d) i used rocket jump on a roof top and activated warcry near an arthon (machinegun/shield/overwatch)
e) i shot this arthon with my rocket launcher. It destroyed unfortunatly the roof (so i fall down) and destroyed his machine gun.
Since then i am into return fire slow motion animation with my Heavy. He just move and shoot in slow motion.
I guess the game wanted to return fire with the (destroyed) machine gun from the arthon and get stuck with it.

I can reproduce it (even without his gun destroyed it happens) and i have a save of it. I tried to do an Ingame Bug Report but it always tells me “Upload Error”