How to reproduce:
1. Open the attached “IN-84851“ project
2. Open the SampleScene
3. Observe the Scene window and note that all three lights present on the scene have different configurations
4. In the Hierarchy window, select all three lights (their names start with “SportLight3”) by holding Shift or Ctrl
5. Observe the Scene window

Expected result: Each light should maintain its configuration
Actual result: The lights change their configuration, all copying the configuration from one of the selected lights

Reproducible in: 2023.1.0a18, 6000.0.21f1
Not reproducible in: 2021.3.44f1, 2022.3.48f1, 2023.1.0a17

Reproducible on: Windows 10 (by user), Windows 11
Not reproducible on: No other environment tested

Workaround:
Set the Inspector to Debug mode before selecting several lights at once