Been playing since pre-release and im enjoying 1.0 so far, but ants are still clipping through my base and i hear bugs in objects all the time. From what i've noticed is the hitbox for the ant comes from its torso, or basically center mass. This is possibly the cause for their heads sticking through walls. When a bunch of them get pushed together against the wall, they push each other through the wall and they can walk around my base.
A possible fix would be to change the collision of the ant's body/head and the wall.
Either create a 3d model hit box of the ant so the ant's head cannot clip through the wall, or increase the 'collision' hitbox radius for ants and walls so the ants heads do not clip through the wall, or change the collision hitbox of the wall itself. The wall's hitbox could be so thin that it's like paper and easily passes through. I'm not sure which of these is easiest, or best.