Reproduction steps:
1. Open the attached "ReproProj" project
2. Open the “Assets/Scenes/SampleScene” scene
3. Open the “Assets/ingest” script
4. In the Code editor, attach the Unity Debugger (In Visual Studio it’s done by clicking on the “Attach to Unity” button)
5. Enter the Play mode
6. In the Code editor, insert a breakpoint at the line 9 of the “ingest” script
7. Once it reaches the breakpoint, inspect the data buffer in the Autos window
8. Observe the results

Expected Result: The data buffer is not empty
Actual Result: The data buffer is empty

Reproducible with: 2021.3.38f1, 2022.3.29f1, 6000.0.2f1

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

Note: When the “ingest” script is disabled in the “Audio Source” GameObject before entering the Play mode, and then enabled after entering the Play mode, the data buffer is not empty