A lot of props (mostly pipes, crates and other static stuff) are rendered with a pitch black texture since the december update, although they are sometimes quite shiny. See screenshots.
The screenshots are with default graphics settings, but I tried lots of different settings without effecting the problem much.
Screenshots uploaded to imgur: https://imgur.com/a/4UIC1
(because I got “An unknown error occurred during the upload.” while uploading here)
Hardware: Geforce GTX 1050 Ti
Edit2: Rendering works fine on Win 10 on same hardware, so it’s a Linux specific problem.