the intro plays normally, and SCP-173 kills the other two guys that enter the chamber with me. after it kills them, it stares at me, and my blink meter is around half when the lights flicker and SCP-173 kills me. I didn't blink, the lights just flicker. I remember in older versions that that would be when it disappears and the game starts.

I mean, that isn't really a bug if I remember correctly. Pretty sure you just have to like run away from the containment chamber before the lights flicker.

To most first players, this is the case. I usually just run away from if it doesn't work just turn off intro.