There is a single red dot on my map always in the same spot at ground level about 1000 units away from anything, and it gets rendered on top of everything, meaning I can see it through walls and solids. It's like a little fuzzy red dot, like a laser pointer. I cannot see this dot in Hammer editor, I can only actually see it when in VR. I can't actually get to it, I have no idea what it is.

Is this an error of some kind, some missing asset? Is there a window or toolbar that will help me see what kinds of errors I have, or for what purpose this red dot?