I managed to replicate this after 30 minutes of trying. Not really useful since you end up back in the elevator.

As you can see it teleports you behind the ladder. Not sure if it matters but I had frame rate at 60.

Need to check if you can get back in bounds during the jump.

I had something weird, I didnt get the elevator OOB, but I nearly clipped through the first tanker door as soon as you start the Mia segment. I ran into it while trying to turn the wheel and it essentially pushed me all the way through but pulled me back. That could be something worth noting since if it can be done without pulling you back, that saves time from opening the door.

I was playing with an unlocked framerate. Even though I can't run it much higher than what was being displayed my monitor is 144hz so I like to let it do its thing. I don't know if that contributed to it.

One thing I did notice is that when I spawned back in bounds I was on top of the space you're supposed to drop down into, basically floating in midair. I had to walk away and come back in order to drop down. Perhaps when spawning in bounds in certain locations it might give you a kind of ISG hover.

This same OoB happened to me in my first speedrun attempt. I moved mouse fast to left when it happened, not sure if that helps to replicate it. I wasn't able to move, just fell down and teleported back to elevator.