OnEnable on scripts in scene

[KEngelsen]

Hi there!
As Unity - Manual: Order of execution for event functions states:

Note that for objects added to the scene, the Awake and OnEnable functions for all scripts will be called before Start, Update, etc are called for any of them. Naturally, this cannot be enforced when an object is instantiated during gameplay.

But; in my experience this does not always register.
Let’s say, you duplicate a prefab with a script attached in the scene, not adding a prefab from Assets to scene.
Script contains OnEnable → subscribe to some event

When you then press Play to run scene, the object that was duplicated does not register to event until:
-You restart Unity. Then OnEnable functions as expected when running scene.

This can cause some frustration if you’re not aware of this, or you forget that you “have to restart Unity” to get your OnEnable script to function properly on newly added object to scene.

Possible to fix this in a future Unity update?

[karl_jones]

@KEngelsen

Hi there!
As http://docs.unity3d.com/Manual/ExecutionOrder.html states:

But; in my experience this does not always register.
Let’s say, you duplicate a prefab with a script attached in the scene, not adding a prefab from Assets to scene.
Script contains OnEnable → subscribe to some event

When you then press Play to run scene, the object that was duplicated does not register to event until:
-You restart Unity. Then OnEnable functions as expected when running scene.

This can cause some frustration if you’re not aware of this, or you forget that you “have to restart Unity” to get your OnEnable script to function properly on newly added object to scene.

Possible to fix this in a future Unity update?

Have you filed a bug report?