I was going to call this Small Visual Glitches, but I realized one of them’s actually quite huge.
First one’s a minor one - Zombie Security Guard corpses don’t have the pistol in their holster mapped correctly. I haven’t got a getpos or anything on this (sorry), but here’s a screenshot:
Second one’s a bit more major - Some parts of the dam in Surface Tension aren’t rendering. The player can’t swim through them outside of the map, but they can see the edge of it.