Steps to reproduce:

1. Open a Unity URP Project
2. Download and import the Unity Terrain - URP Demo Scene into your project
3. Open the 'TerrainDemoScene' scene at Assets > TerrainDemoScene_URP > Scenes

Actual results: After the scene loads, the trees load into the scene briefly as blue outlines, before flashing immediately out of existence and becoming no longer visible at all. Check attached video for demonstration.

Expected results: The trees render correctly in the scene and remain visible

Reproducible with versions: 6000.0.23f1, 6000.0.8f1

Not reproducible with versions: 6000.0.7f1, 2022.3.50f1, 2021.3.44f1

Can’t test with versions: - 

Tested on (OS): Windows 11

Notes: 

• If select the Terrain and go onto the Paint Trees tool, you can see that the Rocks and some other foliage render in the Trees section, but not trees themselves. Other foliage can be painted onto the terrain fine, but Trees will not show when painted.
• Placing one of the trees directly in the scene as a GameObject doesn't work either