Child UIDocument or PanelRenderer with Relative position object's Gizmo is offset

Steps to reproduce:

1. Open the attached project
2. Open the SampleScene
3. Select the Child UIDocument object "UIDocument (1)"
4. In the Inspector window, validate that the Position is set to Relative
5. In the Scene view, observe the position of the Gizmo

Actual results: Gizmo is offset compared to the object's UI elements

Expected results: Gizmo is placed in the position to envelop the child object's UI elements

Reproducible with versions: 6000.5.0a8, 6000.5.0b5, 6000.6.0a3

Not reproducible with versions: 6000.0.73f1, 6000.3.14f1, 6000.4.4f1, 6000.5.0a7

Tested on (OS): macOS 26.4.1

Notes:

• Affects UIDocument and PanelRenderer objects. (PanelRenderer objects did not receive gizmos prior to 6000.5.0a8)