Well, just got here on PC version in steam, and i can't go any further. it says investigate Petrescu's actions, and he's stuck in an animation loop at the door, just knocking, over and over again. I walked away, came back. slept a night, reloaded a few times, and every time i go back to the gate, he'd be stuck in a repetitive animation with no red mist to trigger the cutscene.
But tonight i went up to the gate and stood there. Watched him knock over and over for about 3 minutes while typing this post with my investigation senses turned on, and eventually the nurse opened the door, then the red mist came up and i can now press A to trigger the cutscene. So it is fixed, just need to be a bit patient for some reason.