Reproduction steps:
1. Open the attached “UIToolkitTransparencyIssue0.zip” project
2. Open the “SampleScene”
3. Enter the Play mode
4. Observe the Game view and exit the Play mode
5. Select “UIDocument” GameObject in the Hierarchy
6. Open the “NewBehaviourScript” from the Inspector
7. Comment the “_showHideElement1.AddToClassList(USS_CLASS_HIDE);" line
8. Save and enter the Play mode
9. Observe the Game view
Expected result: The SVG image is tinted on both occasions with an alpha of 50%
Actual result: Adding the AddToClassList() function breaks the tint color application and makes the image fully black
Reproducible with: 2021.3.35f1, 2022.3.21f1, 2023.2.12f1, 2023.3.0b9
Reproducible on: Windows 11, macOS 14.3.1 (M2 Pro) (User reported)
Not reproducible on: no other environment tested
Note:
- Also reproducible in the Player