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Cycles - Panoramic lenses break bump mapping
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Description

System Information
Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 417.71

Blender Version
Broken: version: 2.80 (sub 52), branch: master, commit date: 2019-03-29 00:43, hash: rB99d4321feff6

Short description of error
Using a camera with a panoramic lense creates artifacts on textures that control bump map with bump map nodes or with displacement. Creating weird lines

Exact steps for others to reproduce the error
Open the file provided{F6898244}

Switch the 3d view to Rendered shading mode, and you should see the artifact. In this example with voronoi, the grooves between the cells are also rendered incorrectly, but it happens with any texture with a sharp edge.
Change the type of lens of the camera from panoramic to perspective back and forth to see the difference.
You can also change the proportions of the camera changing the dimensions of the render output to change the shape of the artifact.
It also seems to be weirdly distance based. If you move the camera further, and increase the plane size and strenght of the bump to match, the flipped line starts to dissapear, and the sharp edges start to look better

Details

Type
Bug