Extremely bizzarre Glitch in HL2 Map

Probably in the “other” Map folder, intro_ms (Or something like that), in which:

Gman is black
Anti-Mass spectrometer has no textures
Train ride goes on forever.

That’s an old, broken map.

For the intro sequence from HL2 open up “d1_trainstation_01”

It’s the Xbox 1 sequence of the intro, somehow it sneaked into the pc version