Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86
Broken: version: 2.80 (sub 74), branch: blender2.7, commit date: 2019-06-17 21:07, hash: rB741641f4c3b8
Short description of error
Dof causes banding in EEVEE if a material has alpha hashed blend mode, and the alpha is not set to 1 in the principled node.
Exact steps for others to reproduce the error
create a plane, add a principled shader, turn on alpha hashed, turn down alpha a bit in principled node. add a camera and render in EEVEE. Banding appears between the camera and the fstop distance.