Reproduction steps:
1. Open the attached project “AssemblyBug”
2. Select “Assets/StrawberryShake/StrawberryShake.asmdef” asset
3. In the Inspector window under the Assembly References tab open the dropdown menu
Expected result: Systems.Buffers Assembly Reference is shown in the list
Actual result: Systems.Buffers Assembly Reference is missing from the list with some other references
Reproducible with: 2020.3.45f1, 2021.3.20f1, 2022.2.9f1, 2023.1.0b6, 2023.2.0a4
Reproducible on: macOS 13.1 (Intel)