when i am in the building (1.floor) and doing my stuff ,sudenly zombie outside of the house sees me and just walks/runs through walls and attacks me.

Right now the only solution is to run on the 2.floor where they can not fallow(or climp up ladders to roof),some times some female zombie and one oldman can allso run the stares,but most of the zombies cant,they just run under the stares and fallow me everywhere i move(They mimic my movements),they just wait for me to get down again.

later testing their movement i descovered that zombies can walk through EVERYTHING,trees,rocks ,fence,walls,houses(even the ones that we cant enter-"paper houses")