im guessing this is a bug but im not sure

[cmcdo207 10]

Well i was in the beautful town of electro and i was getting my food from the local store then i got hit by an invisible zombie that did no damage and it was weird. so wtf happened

[Hethwill_Khan 233]

Zomboids can and will attack through floors and stairways. It is not intended obviously but we have to endure it for the time being.

[DropBearChick 1217]

Its a known bug, for me when they walk up stairs they go invis but wenn they come down there fine

[Fflint 22]

Did you run on stairs or did your trousers went ruined? I got a bug like that and one time i broke my leg couse my trousers went from badly damaged to ruined.