Collision - Wychmire Swamp
Not sure what you are trying to report here aside from the corpse not disappearing. This doesn’t have anything to do with collision. You can walk through all enemies even when they are alive. You only collide with them if you have melee assist enabled.
The corpse does disappear sometime around the start of the pre-event.
I know the corpse disappears at the start of the pre-event. But it should have collision since it’s big as a motherkittener and in the middle of the swamp and would add more to the realism of the game. Just my take on it. It’s a press/rend bug if it’s not intended and if it’s as design then just ignore it.