NullReferenceException is thrown when assigning an Object to a custom DebugUI.ObjectField in Rendering Debugger

Reproduction steps:
1. Open the attached “BugRepro” project
2. Open the Rendering Debugger Window (Window > Analysis > Rendering Debugger)
3. Click on the BugReproducer section
4. Click on the Test Field and select any Object
5. Observe the Console window

Expected result: Object is assigned and no errors are thrown
Actual result: “NullReferenceException: Object reference not set to an instance of an object” error is thrown

Reproducible with: 2022.3.60f1, 6000.0.48f1, 6000.1.4f1, 6000.2.0b1

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