After building wooden walls around my base (playing on a friends private server) I've experienced zombies running right through my built walls as if they aren't even there. Tried tearing down and rebuilding but still doesn't seem to help. It seems like there's only a small section of the entire structure I built that they can get through so it's not like they can run through every wall I build, just specific points. Please see the attached video as evidence of what I'm refering to! Let me know if any other information is needed. Thanks!