MacBook Pro / macOS Sierra 10.12 / AMD Radeon R9 M370X VRAM 2048 MB

Blender Version: 2.78 hash:6f92604

Short description of error
Compute Device: AMD Radeon R9 M370X / Cycles Render

Render and Preview are working fine but Bake is going to freeze the complete System.
Process bar keeps saying 0%, the computer is heating up and just a hard reset will work.
This problem also was happening on the OS X before Sierra.

Exact steps for others to reproduce the error
create a simple scene in Blender Cycles Render:
Create a plane (ground), a plane (emission material) and a cube (UV unwrapped). Set the cube on the ground, position the light.
Create a new texture in image editor (512x512), name it TEST.
Create a diffuse material with texture node (TEST) for the uv unwrapped cube.
In material the texture node is still selected, cube selected in object mode.
Render tab go to Bake and hit Bake with Bake Type: combined