Clicking on a prefab while in play mode calls Awake on that prefab continuously

Repro Steps:

- Download the Tanks project form the asset store: http://u3d.as/jH2 (or used the attached project)
- click play
- while in play mode navigate to -Complete_Assets/Prefabs and click on the CompleteTank to inspect it

notice the scene getting spammed with inactive tank explosions (which are called don Awake() in the TankHealth.cs script.
You can go further and add a Debug to TankHealth.cs in the Awake() function to see how many times it gets called.