openSuse 13.1; nvidia GTX 750
Short description of error
When tiled rendering is used with cycles (blender render is fine) the orange indicators of the individual tiles are limited to 16.
Exact steps for others to reproduce the error
The default blend file works, only difference is setting up samples to 20k or something so it does not immediately finish rendering in Cycles. All other settings are default.
And you need probably more than 16 cores/threads,