If you have ProBuilder installed and open the editor Preferences or Settings windows, the following warning will be displayed in the console:

PreferenceItem is deprecated. Use [SettingsProvider] instead
UnityEditor.SettingsWindow:OpenUserPreferences()

1. Install Unity
2. Create a new project with any settings
3. Open the Package Manager and add ProBuilder to the project
4. Open the Editor Preferences window

Result:
Warning appears in the console.

Expected Result:
Warning should not appear.