Wanted to add to this thread and say that there is another heavy attack bug plaguing the game right now. Seems to happen when falling or rolling, but essentially you hit the ground and come out heavy attacking without touching the button. You then continue to heavy attack until you fix the bug via bashing or dodge rolling again.
This is extremely problematic in PVP as it causes me to constantly get stuck in slow-moving heavy attack animations while trying to kite around. Really would like to see this issue acknowledged.
Here is a clip of what I mean.
https://streamable.com/ydjnhi