Custom Scaling Rule Class Being Set in .Ini But Not in Project Settings

Setting a Custom Scaling Rule Class in the Project Settings does not change the dropdown to indicate the asset chosen, however the change is made to the config file DefaultEngine.ini.

1. Open the editor
2. Navigate to Edit->Project Settings->User Interface
3. Select an asset in the content browser
4. Press the arrow next to Custom Scaling Rule Class (Notice that there is no change in the value in the project settings)
5. Check the DefaultEngine.ini file located in your project's Config folder.

Result: Notice that the selected asset is set in the config file, but in the project settings, it still says None.