System Information
Operating system: Windows-10-10.0.19043-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3060 Laptop GPU/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.47

Blender Version
Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: rBf1cca3055776
Worked: (newest version of Blender that worked as expected)

Short description of error
the object material is not assigned if you use geometry node mesh primitive instance and remesh modifier after

Exact steps for others to reproduce the error

1. add geometry nodes to an object
2. distribute point on face
3. instance mesh primitive on point (like icosphere)
4. add realize instance node
5. add material (it will be show up)
6. add remesh modifier (the material will be unassigned)

it works well if you use as instance an object in scene instead of a mesh primitive inside geometry node