Reproduction steps:
1. Open the attached “BugRepro” project
2. Open the “Assets/Samples/Visual Effect Graph/17.0.3/Learning Templates/Scenes/URP_VFX_Learning_Templates” Scene
3. In the Hierarchy window, select “Multiple Outputs” GameObject and focus on it in the Scene View
4. In the Rendering Debugger’s (Window > Analysis > Rendering Debugger) Rendering tab, set Overdraw Mode to “All”
5. Observe the “Multiple Outputs/TurntableWithBackdrop_VFX/VFXG Multiple Outputs” GameObject’s drawn particles

Expected result: All the drawn particle have the same overdraw level
Actual result: The Unlit Quad Particles (center column) has varying overdraw values and the URP Capsule Particles (left column) ignores the background, thus having overdraw value 1

Reproducible with: 2021.3.41f1, 2022.3.39f1, 6000.0.12f1

Reproducible on: Windows 11
Not reproducible on: No other environments tested