In the very latest experimental (Windows SDL) I’ve run into an odd graphical bug where occasionally the game will show a zombie on an open square when it is actually standing on a nearby square, e’x’amining the square reveals there is no zombie there, but it’s particularly nasty when I am fighting off a horde of zombies in a window, I go to hit the phantom zombie and instead climb into the window and promptly get eaten alive.
If it’s relevant, I was on static spawn and playing around with the spawn multiplier.