same as T56545

System Information
Windows 10 Pro, 64bit, NVidia GTX 970 driver version 399.07

Blender Version
Broken: 2.80 alpha 2, 2018-11-09

Short description of error
In eevee, for some materials that include tangent space normal maps, expanding the preview in the materials properties causes a crash

Exact steps for others to reproduce the error
In the attached file, open the material preview in the properties panel to make it visible. Crash should occur immediately.

Additional information
This problem might be related to another issue with tangent space normal maps where some materials appear completely white until the normal map is dis- and reconnected to the shader.