T-Series inerior view

What variant? Do you have any T-Series related mods installed? Cache cleared? Fresh reinstall? I can't replicate the bug here.

The interior camera is attached to the seat, so if the seat is missing (it's a newly added part) it's not going to work. That could easily be explained by using a modded version of an outdated T-Series combined with the newest one from the official build, which have conflicting files. This is why I tell people not to mod unfinished vehicles

EDIT: The seats were missing from the .pc file, but like I said, it still loaded them and the interior camera still worked regardless.