Transport ship semi-invisibility

This bug I noticed happens only on the ship maps. It occurs not very frequently. So basically you leave the base from either BL or GR from the left hand side and double jump the boxes to go into the tunnel. By tunnel I mean the point on the loading screen map where it says sneak attack. If you crouch on the box in the tunnel and look for enemies trying to attempt a sneak attack you sometimes don't see their bodies but you can see their names. It's like they are semi-invisible. This bug only happens sometimes.