System Information
Operating system: OSX
Graphics card: Radeon Pro 560 4096 MB

Blender Version
Broken: 2.80. Date 2019-02-15

Worked: (optional)

Shaders nodes don't work (shader editor)

Diffuse BSDF; Brick Text.; Image texture Etc. do not respond.
If I use the addon Polliigon Material converter I do get textures