Any idea if Rocket prioritized working on the zombie problem?

This isn't really noticeable unless you're running around with no weapon but can be extremely annoying in some situations. They just completely ignore any walls, fences or houses going straight through them, even sometimes glitching through the ceiling like these barriers are non-existent in their reality.

It does pose a big problem because zombies do in a way play an intricate part in this game, it's a zombie survival game and if the zombies can go through walls, fences, gates, wood and stone then it defeats the purpose of an important aspect of a game.