To reproduce:
1. Open the user's attached project
2. Open and play the scene "main2"
3. Select Main Camera and toggle the "Dummy Value" in the inspector

Expected result: The dummy value does not change the array in any way
Actual result: When the dummy value is toggled, the array becomes empty

Reproduced with: 2017.4.11f1, 2018.1.9f1, 2018.2.7f1, 2018.3.0b1

Notes:
- This happens only when the array's script is loaded after the Play mode starts. The scene "main" shows a correct behavior;
- When the Inspector is set to Debug mode, the "Dummy Value" changes both the private array and the public array to empty.