Steps to reproduce:
1. Open the attached "ScriptBug" project
2. Select "Directional Light" GameObject in the Hierarchy window
3. Open the "NewBehaviourScript" script which you can find in the Inspector window
4. Uncomment lines 6, 7 and 12
5. Press "Save" and open the Unity Editor window

Expected result: The script "NewBehaviourScript" which you can see in the Inspector window is loaded without errors
Actual result: "The associated script can not be loaded" error appears under the "NewBehaviourScript" script

Reproducible with: 2020.1.0a6, 2020.1.0a15
Not reproducible with: 2017.4.35f1, 2018.4.14f1, 2019.2.15f1, 2019.3.0f2, 2020.1.0a5

Note: If you delete or write one more "*" in the first line of the script, the script loads without any errors