Reproduction steps:
# Open the project “sublabel”
# Click on the “Main Camera”
# Show the UI Toolkit Debugger on the Inspector by clicking on the Window menu button (3 dots menu on the top-right corner of the Inspector) and click UI Toolkit Debugger.
# In the Inspector, scroll down to the “New Behaviour Script” attached to it in the Inspector window
# Right-click on the “X” or any other value label (See attached GIF)

Expected result: Context menu dropdown appears with options such as “Copy Property Path”
Actual result: Nothing happens

Reproducible with: 2022.2.0a9, 2022.2.0b3, 2023.1.0a4
Not reproducible with: 2020.3.37f1, 2021.3.8f1, 2022.1.12f1, 2022.2.0a8

Reproducible on: MacOS 12.2.1 (Intel)