How to reproduce:
1. Create a new Unity project
2. Right-click in the Project window to open Contextual Menu
3. Try pasting text in the search bar using the mouse
Expected result: Text is pasted in the search bar and Contextual Menu stays open
Actual result: Contextual Menu is closed
Reproducible with: 2023.3.0a11
Can't test with: 2023.3.0a10 and lower (the copy/paste pop-up not available > [Internal link])