Zombies glitching trough doors and walls and appearing behind you even when all doors are closed.
Animals glitching trough walls and doors and are able to hit you because of that.
Make bases zombie proof, they can't jump fences and gates.

Please add a fast move option for loot, it is a pain to have to move a backpack full with stuff one by one....
Please add the possibility to put a backpack with loot inside the car, so you don't have to empty it first (one by one)

When it is raining outside, when you go first person inside a vehicle it "stops" raining.
When you step out a vehicle with the engine still running, leave it running.. give us the option to keep it running.
Add a horn to the vehicles