**System Information**
Operating system: Windows-10-10.0.19042-SP0 64 Bits
Graphics card: NVIDIA GeForce MX130/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 496.49
**Blender Version**
Broken: version: 3.1.0 Alpha, branch: master, commit date: 2021-11-18 00:40, hash: `rBceec40097583`
Worked: none
**Short description of error**
[Please fill out a short description of the error here]
{F11821932}
It seems they forgot that Vertext Color and UV Map can also read custum attributes, at least Cycles reads it. The fact that Eevee doesn't should be considered a bug.
**Exact steps for others to reproduce the error**
[Please describe the exact steps needed to reproduce the issue]
[Based on the attached .blend file
{F11821939}
Turn on Rendered View Shading on the Left Side Viewport and Comapre Cycles and Eevee Results.