Its not a bug, there is i think a slight lighting bug in that the cockpit is very lit, i think it is present in a couple of cockpits (from memory its a known issue)
The changes in textures and models, much of the random clutter from around the other consoles have been removed in order to make the multi-crew seats not have too much background stuff blocking the hologram or possible future visuals. It is a design choice based around making the cockpit/bridge flexable and less cluttered for the other crew members.
They removed a lot of the grimey feel which, id like to see back again, but I would hardly get as upset as a lot of the people here over it. FDev are between a rock and a hard place.
If they didnt change it, the people playing multi-crew would be like... eeew these stations are hard to see or understand because iv got a huge static picture of the anaconda in behind the holograms. Along with the other general moan of "Its 3302, you'd think that an expensive ship like the anaconda would not look like its got oily hand prints everywhere" So what did they do? they got rid of it all. And now people moan again.
I personally think the general lighting just needs to be made a bit more moody... but thats about it.