How to reproduce:
1. Open the user's attached project
2. In the Project window open Assets > AddressableAssetsData > AssetGroups
3. Select the RobGroup4 Asset
4. In the Inspector expand the Advanced Options section
5. Close the project
6. Reopen the project
7. In the Project window open Assets > AddressableAssetsData > AssetGroups
8. Select the RobGroup4 Asset
9. Observe the Inspector

Expected result: The Advanced Options section is expanded
Actual result: The Advanced Options section is closed

Reproducible with: Addressables 1.10.0 (2018.4.32f1, 2019.4.21f1, 2020.2.7f1), 1.17.5-preview (2018.4.32f1, 2019.4.21f1, 2020.2.7f1, 2021.1.0b10, 2021.2.0a7), 1.18.2 (2019.4.25f1, 2020.2.7f1, 2020.3.7f1, 2021.1.6f1, 2021.2.0a16)

Notes:
- The issue is also reproducible when switching between Groups