**System Information**
Arch Linux (x86-64)
nVidia Geforce GTX 670
**Blender Version**
Broken: 2.70 25ad7b4
**Short description of error**
In Object mode, When Matcap is On, Right clicking on backfaces is not work.
**Exact steps for others to reproduce the error**
Open {F80593}. right click the Plane.