Box Collider inherits an incorrect Z value when added to a Panel Renderer with PanelSettings set to World Space

Steps to reproduce:

1. RMB in the Hierarchy>UI Toolkit>Panel Renderer
2. Select it
3. Double click the Panel Settings in the Inspector
4. Set Render Mode to World Space
5. Re-select the Panel Renderer and add a Box Collider 
6. Observe the value of its Z axis (9.44166e-07) and compare to the visual in the scene (screenshot attached)

Actual results: A non-0 value is visible in the inspector, however, the preview gizmo is showing a 0-sized Z axis

Expected results: a) the Z value is set to 0 or b) the preview gizmo is correctly displaying the non-0 value that the collider appears to be created with

Reproducible with versions: 6000.5.0a5, 6000.5.0b2, 6000.6.0a2

Tested on (OS): Mac OS

Notes:

• Not tested with earlier versions because Panel Renderer is a new feature that landed in 6000.5.0a5