Steps to reproduce:
1. Create a new project and install the "AI Generators" package
2. Create a new Terrain (GameObject > 3D Objects > Terrain)
3. Click the "New Brush..." button in the Inspector window
4. Click the "Generate New" button
5. “New Texture” window should open
6. Minimise the window
7. Observe the placeholder in Project window for “NewBrush.brush”
Actual results: Small rectangle is displayed in Project window
Expected results: Black icon is displayed in Project window
Reproducible with versions: 1.0.0-pre.10 (6000.2.0b3)
Tested on (OS): macOS Silicon, Sequoia 15.5