Unity bug: transform.position assign attempt for 'SceneCamera' is not valid. Input position is { NaN, NaN, NaN }. UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

问题：

Unity 报错： 

transform.position assign attempt for 'SceneCamera' is not valid. Input position is { NaN, NaN, NaN }.

UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

 

解决方法：

改变Unity editor 布局（layout）可以解决这个奇怪的问题。