Reproduction steps:
1. Open the attached “IN-138670” project
2. Open the “Scenes/SampleScene” Scene
3. Drag the “Cube” GameObject from the Hierarchy window to the Project window
Actual result: Prefab is not created
Expected result: Prefab is created
Reproducible with: 1.5.0-pre.1 (6000.3.12f1, 6000.4.1f1), 2.3.0-pre.2 (6000.0.72f1, 6000.3.12f1, 6000.4.1f1)
Not reproducible with: 1.0.0-pre.12 (6000.3.12f1, 6000.4.1f1)
Couldn’t test with: 1.0.0-pre.12 (6000.0.72f1), 1.5.0-pre.1 (6000.0.72f1), 2.3.0-pre.2 (6000.5.0b2, 6000.6.0a2) - Too many compilation errors
Reproducible on: Ubuntu 25.04, Arch (user)
Not reproducible on: Windows 11