Also, this is actually present since the original mod version. In the room with the soldiers and a mounted gun, where you have to go up to pull a lever, and open the door to access the base of the rocket, there is a window on a 45 degree wall. From the bottom corners of that window are two small slits in the world geometry.
I realize this is rather small, but with this being a commercial release now, I figure no bug is too small to warrant a few minutes of looking at, and seeing if it’s fixable.
That bit of yellow is the sign on the far wall, around the corner. The same slit is present on the other side of the window.
I’ve noticed several other small geometry gaps, and one large one, but I neglected to make note. I’m playing through again shortly, and will be more diligent.