incorrect lighting CPU vs GPU in OpenCL

Support Lighting and Rendering
1

hi guys,

lighting is incorrect when using GPU (Opencl with radeon 7970 ) with blender 2.78.4 (new daily build).
is this a known bug or a new one ?
below renders with default startup scene
CPU:

cpu.jpg1824×732 136 KB

GPU:

gpu.jpg1708×722 162 KB

2

The same happens to me with R9 280X.

Updated drivers but nothing happened.

3

FYI:

https://developer.blender.org/T51132

Regards.