1. Boot up a mission in the editor or the viritual arsenal
2. Give the player the Mechanic Clothes
3. Enter any vehicle
4. In first person, look down at the models collar area

It does not matter which vehicle you enter.
The hiddenSelections is correct when in third person.
This is not the case for any of the other Orange DLC uniforms.
This is inherited through the .p3d when retexturing.
The problem lies in the .p3d.

I am using the unmodded 1.92 version of the game when playtesting