My apologies if I overlooked a bug report while searching for an existing one. I wasn't able to find one about the problem described below however, so here goes:
Windows 7/CPU and Windows 10/GTX 1060
Broken: 2.79b and build 9d59851ca3d
Short description of error
When using a bump map with a panoramic camera, the bump map looks like a an overlay of itself with a shifted copy. See image below, which is just a plane with a bump map texture to simulate engraving.
With a perspective camera, the bump map looks as expected:
Exact steps for others to reproduce the error
See attached .blend file.
Render the scene or turn on rendered preview, with the fish eye camera selected. The result is the first image.
Then switch to perspective camera in the scene tab and render again or see the preview. The result is the second image.
Thanks a lot for looking into this!