Entities Systems window has a “Show Full Player Loop” dropdown which does nothing when clicked after enabling “Show Full Player Loop”

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Make sure Hierarchy V2 is enabled (Unity > Settings > General > Use new Hierarchy window)
3. Install the Entities package (com.unity.entities)
4. Open the Entities Systems window (Window > Entities > Systems)
5. Click the kebab button on the right side and select "Show Full Player Loop"
6. Click the "Show Full Player Loop" dropdown on the left side of the Entities Systems window
7. Observe teh Entitites Systems window

Actual results: Nothing happens, no dropdown is opened

Expected results: Either the "Show Full Player Loop" is not a dropdown, but rather some different label or a dropdown opens

Reproducible with versions: 6000.0.72f1, 6000.3.12f1, 6000.4.1f1, 6000.5.0b2, 6000.6.0a2

Can’t test with versions: 2023.1.0a3 (Due to no Entities package)

Tested on (OS): Windows 11, MacOS Silicon Tahoe 26.3

Notes:

• Editor versions 6000.5.0a8 and below require extra steps for reproduction before step 4, which are: Open the Entities Hierarchy window, and create a new Sub-Scene, then proceed to the Entities Systems window.