happened to me in the basement of the church, where the metal grid is.
I climbed down the ladder to avoid being attacked, then lurked down there for the enemy to come for me.
He climbed down and hit me. After that my character performed the "get hit" animation, bugged through the metal grid and was behind it.
I had to dig through 3 piles of dirt to get out.
By the way, why don't they shoot through metal grids? :p
It will be fixed.