How to reproduce:
1. Create and open a new project
2. Add the attached “System.Windows.Forms.dll” and “System.Deployment.dll” files to the project’s Assets folder
3. Open the Test Runner window (Window → General → Test Runner)
4. Observe the Console window

Expected result: No errors appear in the Console
Actual result: A StackOverflowException appears in the console, and if the project contains tests, they will not be loaded in the Test Runner

Reproducible with: 6000.0.56f1, 6000.0.60f1, 6000.2.8f1, 6000.3.0b6, 6000.4.0a2
Not reproducible with: 2022.3.66f1, 6000.0.55f1

Reproducible on: Windows 11
Not reproducible on: No other environments tested