Hey there devs!
I was in two separate schools in what I think was Cherno, on the bottom level I got chased into a room with 2 zeds, both of them had some pretty serious pathing issues on the stairs, and especially around the shelves. THey just kind of stood there as I tried to wack them with a baseball bat (which doesn't seem to work very well indoors yet)
Lead zombines up stairs or into room with shelving system in the middle.
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Cheers