Backdrop Filter renders a scaled-down copy of the background image instead of applying a Backdrop filter when using in-scene UI Authoring

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Right-click in the Hierarchy > UI Toolkit > Standard Elements > Visual Element
3. In the Inspector, add any texture to its background and increase size for better visibility of bug
4. In the Hierarchy, create a Label element and make it a child of VisualElement
5. Select the Label and in the Inspector find the "Backdrop Filter" foldout
6. Click "+" to add a new list item
7. Select any option except "Custom"
8. Increase the value of filter to make it more visible
9. Pan in the UI Viewport and observe the filter

Actual results: The Backdrop Filter renders a scaled-down copy of the background image instead of rendering and applying the actual filter

Expected results: The Backdrop Filter property applies the selected filter to the content behind

Reproducible with versions: 6000.6.0b1, 6000.6.0b7, 6000.7.0a4

Can’t test with versions: 6000.3.21f1, 6000.5.7f1 (in-scene UI Authoring not available)

Tested on (OS): Windows 11

Notes:

• The filter is shown correctly in UI Builder and Game view