Repro steps:
1. Open user attached project
2. Click on "New Scriptable Object Example" in the Project Window
3. Click "Add" a few times in the Inspector and assign any values
4. Duplicate "New Scriptable Object Example" by Ctrl+D (Command+D)
5. Observe the duplicated ScriptableObject in the Inspector

Expected: New ScriptableObject is created with values from the previous ScriptableObject
Actual: ScriptableObject is created with no values

Reproducible with: 2017.1.4p2, 2017.2.3p1, 2017.4.6f1, 2018.1.6f1, 2018.2.0b9, 2018.3.0a2

Notes:
- Reopening the project deletes all values previously added from all ScriptableObjects that were created through the Create Asset Menu
- If you add values on a duplicated ScriptableObject and duplicate the new one values are transferred correctly