How to reproduce:
1. Open the “ReproProjectGUIFinal“ project
2. Open the “Level01 Scene“
3. Move the Console window to the same place as the Inspector window
4. In the Project window navigate to the “Assets/01-Features/Towers/Data“ folder
5. Click on the “TowerData“ asset
6. Observe the Console window

Expected result: No error is thrown
Actual result: “ArgumentException: An item with the same key has already been added“ error is thrown

Reproducible with: 2021.3.40f1, 2022.3.35f1, 6000.0.8f1

Reproducible on: macOS 14.5 (Intel), Windows 11 (User’s)
Not reproducible on: No other environments tested

Note: After you move the Console window to a different panel on the screen (for example at the bottom of the Editor), the issue does not reproduce anymore. The issue only reproduces when both the Inspector and the Console windows are in the same panel