How to reproduce:
1. Open the attached “IN-136059” project
2. Go to Assets → My → Scenes and open scene “scene01”
3. Enter Play mode
4. Press “Esc” on the keyboard and toggle setting “push grass” off
5. Click apply
6. Toggle setting “push grass” on
7. Click apply again
8. Observe the Game view

Actual result: After some time, the grass displacement intermittently turns off and then on again
Expected result: The displacement camera should consistently render the Graphics.DrawMesh spot into the target RenderTexture

Reproducible with: 6000.5.0a9, 6000.6.0a1 (7dc703ab9bd8)
Could not test with: 2023.1.0a1, 6000.0.71f1, 6000.3.12f1, 6000.4.1f1 (custom package errors)

Reproducible on: Windows 11
Not reproducible on: No other environments tested

Notes:
- When failure occurs, the grassDisplacement RenderTexture asset preview is black, indicating the RT is being cleared but not receiving the expected spot draw output
- spotDisplace.Update() continues executing
- Issue potentially related to render ordering/synchronization