I think that is because that bug has low priority, there are other things more important to fix, like those engineers bugs and the bodies with pink boxes.
I want to congrat the devs for the job on this update. Now the game runs more smoothly in my computer, I think that have to do with the new saving process. The new bodies are cool as well, same as the new spaceframe chassis 
The new engineering stuff is amazing as well (and it will be pretty cool with all the bugs solved) al thought is a little bit too complex it adds a new dimension to the game.
Oh yeah, and the v12 turbos are cool… I guess… [size=75]who would want to ruin a beatiful NA V12 adding turbos anyway?[/size] 
iN the meantime, If you want to use a car body but it is all pink, you should edit the lua file of that body and make sure the materials (ECS_BODY) are enclosed by “”
Something like this Materials = {
"ECS_BODY", --rear body
"ECS_BODY", --front body
"ECS_BODY", --middle body
"ECS_SEAM", --rear seam
"ECS_PLASTIC", --plastic parts
"ECS_GLASS", --windows
"ECS_SEAM", --front seams
"ECS_SEAM", --middle seams
"ECS_TRANSPARENT", --lips
"ECS_BODY", --rear mirrors
"ECS_CHROME", --mirrors
"ECS_CARGO", --cargo box in the rear
"ECS_CARGO_REAR", --cargo box at the front
"ECS_BOTTOM_BOX", --bottom box
"ECS_TOP_BOX", --top box