How to reproduce:
1. Open the "ScriptableObjectOrder" project
2. Open the Main scene
3. Enter Play mode
4. Look at the console in what order Scriptable Objects were executed
5. Open Edit > Project Settings > Script Execution Order
6. Change the order of Scriptable Objects
7. Enter the Play mode again

Expected result: The Scriptable Objects should be executed in user's set order.
Actual result: The Scriptable Objects execution order is ignored.

Reproducible with: 2017.3.0a2, 2017.2.0b5, 2017.1.0p2, 5.6.3f1, 5.5.4p2.