Multiple exceptions are thrown after exiting Play mode when Layout Group component is displayed in Debug Inspector and Padding section is expanded

Steps to reproduce:

1. Open the attached project
2. Open the Sample Scene
3. In the Hierarchy, select the Panel object
4. In the Inspector, expand the Padding section for the Grid Layout Group component
5. Switch the Inspector to Debug mode
6. Enter Play mode
7. Exit Play mode
8. Observe the Console window

Actual results: Multiple exceptions are thrown (NullReferenceExceptions, Curl and Crash reporter related errors)

Expected results: No errors or warnings are thrown when using uGUI components are displayed in the Debug Inspector window

Reproducible with versions: 6000.0.77f1, 6000.3.18f1, 6000.4.12f1, 6000.5.0f1, 6000.6.0a7

Tested on (OS): macOS 26.5.1, Ubuntu 24

Notes:

• The issue occurs with the Grid Layout Group, the Horizontal Layout Group and the Vertical Layout Group components
• The issue does not occur when the Inspector is in Normal mode or when the Padding section is collapsed