Unity3d in Ugui use scrollbar after saving, project start error cause tracking

I recently updated the Unity3d version to 4.6.2. When you use the new UI, you'll see a couple of errors when you close the project and often reopen the project again.

Looking for a lap, found that the scrollbar control has a bug. The slider for the entire space disappears.

The console outputs the

M_TransformInfo.worldAABB.IsValid () ... Isfinite (Outdistanceforsort) isfinite (Outdistancealongview) ... Isfinite (Outdistancealongview) UnityEditor.DockArea:OnGUI ()

The reason for the reported error is that the Top/bottom two value is Nan. So there was an error inside the control. The source code of the control the author has not paid attention to. The Forum below discusses

Google a bit. In the Unity3d forum found the same problems in the pot friends. This issue began with the 4.6.0BETA21 version, so far 4.6.2 still exists

Bug Submission: http://issuetracker.unity3d.com/issues/ M-transforminfo-dot-localaabb-dot-isvalid-when-reimporting-the-example-project

Forum Discussion posts: http://forum.unity3d.com/threads/vertical-scroll-bar-handle-top-bottom-becomes-nan-with-scroll-view.285490/

Ps: Currently I can only re-create a scrollbar control to replace the old one. Continue to focus on the hope that the official can deal with it immediately. Ugui is still good to use.

Unity3d in Ugui use scrollbar after saving, project start error cause tracking