To reproduce:

1. Download attached project "Source.zip" and open in Unity
2. Open "Lobby" scene
3. Enter Play mode
4. Press "Play and Host"
5. Press "Join"
6. Wait until world was loaded

Expected Result: In the console, you will see these messages:

ScarabGood's areacosts[4] in Spawn() = 1
ScarabGood's areacosts[4] in Start() = 1

Actual Result: In the console, you will see these messages:

ScarabGood's areacosts[4] in Spawn() = 1
ScarabGood's areacosts[4] in Start() = 2

Notes:
- This issue appears on Windows and OSX
- The scarab's area costs should be the same, but they are different in Start for some reason
- The costs are set to 1 in MonsterSpawner.cs after calling Instantiate
- The costs are compared again in Monster.Start, where they are 2 for no reason
- Workaround: If you open the project's MonsterSpawner.cs and move the Warp call above the SetAreaCost call,
then you will see Spawn=1 Start=1 in the console - which is how it should be. So the bug is that SetAreaCost aren't saved before this Warp call there

Reproduced on Unity 5.6.4p1, 2017.1.2p2, 2017.2.0f3, 2017.3.0b6 and 2018.1.0a1