Steps to reproduce:

1. Create a new Unity project using a 3D Universal Template
2. Add a Plane GameObject to the Hierarchy (right-click > 3D Object > Plane)
3. In the Project window, create a new Material
4. Save the Scene
5. From the Project window, drag the material onto the Plane and drag it over the Plane without releasing left mouse button
6. Observe the asterisk next to Scene name in Hierarchy

Actual results: Asterisk next to Scene name is flickering - appears and disappears randomly while dragging Material

Expected results: Scene is not marked dirty/with asterisk until the Material is assigned onto the Plane

Reproducible with versions: 6000.0.67f1, 6000.3.7f1, 6000.4.0b7, 6000.5.0a5{}{} 

Tested on (OS): macOS 26.2 (M1)