**System Information**
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.39
**Blender Version**
Broken: version: 2.93.0, branch: master, commit date: 2021-06-02 11:21, hash: `rB84da05a8b806`
Worked: (newest version of Blender that worked as expected)
Material disappears in 'material preview' node after pluging a bunch of textures combined.
The color turns purple (like when there is no material detected. I have 10 textures combined with mix nodes, until then everything all right.
As soon as I put the 11th texture, the object turns purple in 'material preview' mode. Despite that everything works render-wise.
Plug a series of textures combined with 'mix' node and input into a '"factor" of a 'math' node, according to the attached image.{F12740219}
[Please describe the exact steps needed to reproduce the issue]
[Based on the default startup or an attached .blend file (as simple as possible)]