I tried completing the base intro in TSW2 this morning, it's the same as I remember. Can't get past switching the camera back to Internal View per the instructions. The camera switches but the tutorial doesn't acknowledge it. I tried both Classic and Immersion controls, neither worked.
Works fine for me on TSW2. The tutorial will acknowledge as soon as you toggle through ALL the views. Hold R3 + arrow right and then R3+ arrow left several times until you see yourself back in the seat.
Strange, I just cycled through all of the views, I do return to my passenger seat but still the tutorial doesn't acknowledge. Again, I tried both Classic and Immersion controls. Also strange that it says "Return To Engineer Mode" when you're a passenger on this tutorial.
I cranked up my old PS4 and TSW2. And ............ you´re right, it doesn´t work there as well. PS5 version is fine, though. So, your everlasting question - "Has this bug been fixed?" - gets the everlasting DTG answer - "NO". Sorry I couldn´t be of more help!