I was playing with the cellar demo and when I came across the Zombie, he was very glitchy when I shot him and them when he finally died he just decided to hang in mid air with his right arm seperated.
Just something I noticed, but I've attached a screen shot.
Processor i9-9900k CPU@ 3.60GHZ
Ram 32GB
Windows 10 64bit
GeForce RTX 2060