UI Text disappears when alt-tabbing away from Unity Editor

I've been seeing basically the exact same behavior reported in this Linux support thread (which was confirmed by UT), but I'm seeing it on Windows:

http://forum.unity3d.com/threads/text-in-ui-elements-disappearing.354155/

Sometimes, when I alt-tab away from the Unity Editor window, when I come back to the Editor, all the Unity UI Text has disappeared from the Scene view.

Selecting Text widgets in the Hierarchy will sometimes make that widget visible again. Selecting a widget in...

UI Text disappears when alt-tabbing away from Unity Editor