For the C172 it appears that, when in VR, the small lights in the COM buttons (which indicate if COM1 or COM2 is activated, etc. etc.), only show when the user moves his head very close to these buttons. From normal seating position, it appears that the visibility range of these lights are too short. It also appears that it has nothing to do with aspect, because when the user is viewing the buttons directly in front, then the lights only start to appear when the users head is relatively close to the buttons.