Reproduction steps:
1. Open the attached “DrawMeshInstancedTest.zip” project
2. Open the “SampleScene”
3. Enter the Play mode
4. Observe the Game view

Expected result: Two rows of 10 instanced quads are visible
Actual result: One row of 10 instanced quads is visible

Reproducible with: 2021.3.46f1, 2022.3.53f1, 6000.0.27f1, 6000.1.0a5

Reproducible on: Ubuntu 24.10, Windows 11
Not reproducible on: No other environment tested

Notes:
- The issue does not reproduce if ‘URP/Unlit’ Shader is used (That is the row of quads that gets rendered in the project), but that appears to be the only Shader that the issue does not reproduce with
- Also reproduces in the Player
- Enabling “Wireframe” mode in the Scene view shows that the geometry is not rendered
- Mesh Renderer with the Material works correctly, but not when used with DrawMeshInstanced