Steps to reproduce:
1. Open the attached “ClassNameBug.zip” project
2. Open the “SampleScene”
3. In the “Assets/0param” folder find “MyScript.cs”
4. Attach the script to a GameObject within the Project Hierarchy
5. Observe the results
Expected result: The “MyScript.cs” file is added as a Component
Actual result: An error message is shown
Reproducible in: 2021.3.47f1, 2022.3.56f1, 6000.0.35f1, 6000.1.0b3
Reproducible on: Windows 11, Windows 10
Not reproducible on: No other environment tested