I'm trying to render out a multilayer EXR with Combined, Depth, World Coord, Shading Normal, and Velocity Pass.
They all seem to be OK except the Velocity Pass which looks suspiciously like the depth pass.
This looks like a bug.
My setup is:
MacBook Pro 15" Late 2016
Blender 2.79 Official version
RPR for Blender 1.7.203 (core 1.312)
eGPU: Gigabyte Radeon RX VEGA 64 WindForce OC 8GB HBM2
eGPU: Radeon Pro 580