That's what happens when you play Security Breach v2 too often.

Edit: Actually, I got the same bug just now when I joined the LB server. I would assume it has something to do with what the server is using, since I've never seen this bug with this level anywhere else.

I also found a floating dot (it looked like the light from a speed trail but in one spot), which was what my red arrow was pointing to instead of the red flag:



By the way, some springs seem to be missing as well. My only guess as to why this is happening is because the server is using the ghost thing that comes with PC4, but I somehow doubt it.