Custom contextual menu is broken or displayed wrongly when it is created with GenericDropdownMenu UIElement

How to reproduce:
1. Open the “GenericDropdownMenu“ project
2. Press CTRL+Q to open the “Asset Quick Access” window
3. Right click on the “sample” Asset
4. Observe the results

Expected result: The contextual menu is functioning and appears as a small grey square box
Actual result: The contextual menu is not functioning or appearing as a black large box

Reproducible in: 2023.2.0a15, 6000.0.13f1
Not reproducible in: 2021.3.41f1, 2022.3.40f1, 2023.2.0a14

Reproduced on: Windows 10
Not reproduced on: No other environment tested

Notes:

• From version 2023.2.0a15 until version 2023.3.0a19 the contextual menu opens as the large black box with buttons
• From version 2023.2.0b1 until version 6000.0.0f1 the contextual menu opens as a black line without buttons and the “Layout update is struggling to process current layout (consider simplifying to avoid recursive layout): EditorPanelRootElement unity-panel-container (x:0.00, y:0.00, width:774.00, height:311.00) world rect: (x:0.00, y:0.00, width:774.00, height:311.00)
  UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)” error is thrown in the Console
• From version 6000.0.1f1 until version 6000.0.13f1 the contextual menu opens as the large black box with buttons4