Manjaro linux (arch based) - latest, 64 bit, open source radeon driver,
Ati mobility radeon 4650
Broken: 2.74 rc3
Short description of error
Region overlap does not seem to work anymore - with the open source ati driver. Here is a screenshot:
This is not a problem under windows 7. It seems to be a linux related bug, possibly due to the open source ATI driver.
Exact steps for others to reproduce the error
Open blender and enable "region overlap" under "window draw method".