Steps to reproduce:

1. From the main menu, open the Window/UI Toolkit/Sample window.

2. Right click the "Tree View" item in the left pane. (It only supports single selection)

   => The content associated to the "Tree View" item is loaded on the right pane.

3. On the right pane, expand a couple of items

4. Right click on some items in the right pane to select or multi select them

Actual results: No item is selected

Expected results: The item under the mouse get selected

Reproducible with versions: 2023.3, 2023.2

Not reproducible with versions: 

Can’t test with versions: 2022.3

Tested on (OS): 

Notes: