System Information
Operating system: Linux-4.15.0-64-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: Quadro GP100/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.40

Blender Version
Broken: version: 2.81 (sub 13), branch: master, commit date: 2019-10-03 09:11, hash: rBf6a90f018cfa
Worked: 2.81 (sub 12), branch: master, commit date: 2019-10-02 08:22, hash: rBf97a64aa9b7b

Short description of error
When using multiple materials on a single object, only the first one in the stack is visible in Eevee and Workbench.
Switching the materials in the stack seems to cause issues as well.