Reproduction steps:
1. Create a new project
2. Install Input System package (Window > Package Management > Package Manager)
3. Import Input System Sample (e.g. Simple Demo)
4. Open Sample Scene (Assets > Samples > Input System > 1.19.0)
5. Observe the Scene view
Actual result: Materials render pink
Expected result: Materials are displayed correctly
Reproducible with: 1.7.0 (6000.0.0f1), 1.19.0 (6000.0.79f1, 6000.3.20f1, 6000.5.4f1, 6000.6.0b4, 6000.7.0a2)
Reproduced on: Windows 11, macOS Tahoe 26.5 (M4)
Note: Issue is reproducible with In-Game Hints, Simple Demo, Simple Multiplayer and UI vs. Game Input Sample Scenes