Visual artifacts/glitching appear in UI Builder and Game view when moving the mouse cursor if a parent Visual Element has a Filter and its child has a Backdrop Filter

Steps to reproduce:

1. Create a new project
2. Create a new UI Document and open it in UI Builder (Assets > Create > UI Toolkit > UI Document)
3. Add a Visual Element to the Hierarchy
4. Add a child Visual Element to the previously created Visual Element
5. Add background images to both Visual Elements (any png images)
6. On the parent Visual Element add a new item under Filters (any except Custom)
7. On the child Visual Element add a new item under Backdrop Filter (any item produces the bug)
8. Observe the UI Builder viewport and Game view

Actual results: Visual artifacts/glitches are visible both in Game view and UI Builder when moving the mouse cursor

Expected results: No visual artifacts or glitching is observed

Reproducible with versions: 6000.6.0b1, 6000.6.0b6, 6000.7.0a3

Can’t test with versions: 6000.3.21f1, 6000.5.5f1 (no Backdrop Filter functionality)

Tested on (OS): macOS 26.5, Ubuntu 24.04

Notes:

• Reproducible with any built-in Filter function on the parent combined with any Backdrop Filter function on the child (not limited to specific function pairs)