How to reproduce:
1. Open the attached “bug-msaa.zip“ project
2. Open the “SampleScene” scene
3. In the Project tab, click on “Assets”
4. Open the “CustomRenderPipeline“ asset
5. In the Inspector, enable the “Render To G Buffer” checkbox
6. Observe the Scene View

Expected result: The cube with white leaves is transparent
Actual result: The cube with white leaves is black

Reproducible with: 2023.2.0a23, 6000.0.63f1, 6000.2.14f1, 6000.3.0f1, 6000.4.0a5, 6000.5.0a2
Could not test with: 2023.1.0a1 (Unfixable console errors in the script which is required to reproduce the issue)

Reproducible on: macOS 15.3.2 (24D81) (M1 Max), macOS 26.0.1 (M1 Max)
Not reproducible on: Windows 10 (22H2)

Notes:
- Could not reproduce on Vulkan
- Could not reproduce on any lower than 2023.2.0a23 version