How to reproduce:
1. Open the attached “IN-113022” project
2. Import the attached “Unity_Black_Logo“ SVG image
3. In the Project window locate and select the “Unity_Black_Logo“ SVG image
4. In the Inspector, ensure that asset type was generated as “UI Toolkit Vector Image”
5. Observe the Preview

Expected result: Unity logo renders without visual artifacts
Actual result: Unity logo renders with visual artifacts

Reproducible with: 6000.3.0a5, 6000.3.0b1
Could not test with: 2023.1.0a1, 6000.0.57f1, 6000.2.3f1, 6000.3.0a4 (from 6000.3.0a5 it was changed as built-in package)

Reproduced on: macOS 15.6 (M1)
Not reproduced on: No other environment tested

Workaround: Change asset type to “Texture2D“ and then back to “UI Toolkit Vector Image”

Note: The issue did not persist when it was used as a separate package.