I think this has something to do with scripting.
So, In game, I am making a cutscene with a player walking down stairs. BUT, something is wrong with the players walk anim or camera or something. video -
What I want to happen, is when the player walks to the left side of the screen, He turns left, I do NOT want him facing forwards at all times, as shown in the video. Is this shift lock or something?
So, read the link…
It says if AutoRotate is true then exactly what is happening is supposed to happen.
Ok, It is off, but the same thing is happening…
I have the same thing, even if auto rotate is false, it still does not rotate the character. I don’t know what to do…
I don’t know how, but when I reopened game file, it got fixed.
It looks similar to this bug:
In Studio, playtest, enable shiftlock, then stop playtest. Future playtests will be stuck on shiftlock (even with shiftlock disabled). Restarting studio fixes this bug, at least for me.
Now it’s even worse, my player is stuck looking one direction no matter where my camera is. 
It looks like you’re moving the camera away slowly. Whatever you’re doing it’s going the wrong way.
Also looks like you’re misusing the viewport somehow. Like the picture inside of a viewport is being told to move away. You’re locked on to the wrong thing … moving it. Or just calling it the wrong way.
I don’t have a viewport in my game.