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Thank you for reporting a bug to Unity. After reviewing the behavior, we've confirmed it aligns with the current design and intended use of the feature. We understand this may differ from your expectations or workflow. We will close this case as 'As Designed.' If you have feedback on how the feature could better meet your needs, please let us know - we value your input and consider it in future improvements. We believe the issue to be primarily due to change in Color Space that is encountered when migrating to URP/HDRP from the Built-in RenderPipeline. The Color Space default for the Built-in renderer is Gamma while the default for URP is Linear. The active Color Space can be changed in the Player section of the Project Settings.
How to reproduce:
1. Create a new Unity URP project
2. Import the attached "Example" image
3. In the Inspector, set the Texture Type to Sprite (2D and UI)
4. Make sure that the Sprite Mode is set to Single
5. In the Hierarchy, create a Canvas UI GameObject
6. Create a nested UI Image GameObject called "Background"
7. In the Inspector, set the "Background" GameObjects Height to 2000 and Width to 3000 in the Rect Transform component
8. In the Image component, change the Color to black
9. In the Hierarchy, create another UI Image GameObject
10. In the Inspector, set the "Image" GameObjects Height and Width to 500 in the Rect Transform component
11. Change the Source Image to the "Example" Sprite
12. Observe the Game view
Actual result: The lightbulb's outer glow effect is blown out
Expected result: The lightbulb's outer glow effect is not as blown out
Reproducible with: 2023.1.0a1, 6000.0.71f1, 6000.3.11f1, 6000.4.0f1, 6000.5.0a9, 6000.6.0a1
Reproducible on: macOS 26.3 (by user), Windows 11
Not reproducible on: No other environments tested
Note: This issue only reproduces with URP and HDRP projects
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