GameObject.Find returning non-existent objects

Everytime I start to use mecanim, all my scripts that look for my any object using findwithtag/find and etc starts to return a non-existent (I'd say "ghost" =P) objects, I debugged in many ways and the find method is returning an object that doesn't exist at all, when I double click the gameobject reference in the inspector it selects a gameobject that can't have it's values changed, also, it isn't on the scene, it isn't in the project folders and it, it has a (Clone) on it's name has an animator attached to it and that's all ... Does someone already faced any problem like this one?

 

I just had this exact problem. Restarted Unity and it disappeared. Also via debug found the positions were 0,0,0, nothing was there.

 

I am having same problems, every few compilation GameObject.Find is returning somehow same objects that were in previous played scene, very strange, cant find any solution..