Cant confirm this bug, all light working for me but there is BUG that if you are alone in vehicle, and turn on lights and switch seats then the lights turn off by itself (you can see lights on vehicle but it does not illuminate the surroundings)
https://www.youtube.com/watch?v=GEVV-2Uo5A8

Also all vehicle automagically turn off engine while you get out as driver but not as a passenger.

Got it to happen on the humvee and open top uaz 469

duplicates T182360: [1.2.0.102] Pressing a button in first person in a vehicle automatically returns the button to its original position

i checked the video robretotpk posted and its completely different bug (lights are working until you change the seat) than the one admin merged with (light doesnt work at all)

@CocoNuts
the actual ticket subject posted by slamsgt does indeed match the duplicate into which it was merged. if robretotpk has found a new bug then he/she should start a new ticket.