GameObjects with NetworkIdendity are getting disabled

I am creating a networked version from our game. That is all going well i converted several scripts to a Networkbehavior what requires them to have a network Identity. The problem what i fase is that it is working well when i set up an connection but when i decide to play the game in offline mode (normal) the objects that are already active in the game scene are getting disabled at start. The network Identity seems todo this.

Is this a bug or is it supposed to be like this? If so what...

GameObjects with NetworkIdendity are getting disabled