My hope is that all these dark blue/cyan blue/magenta sharp transitions are reduced once we have the gamut mapping as an approximation with smoothing. There’s many examples in the old ZCAM thread where this is being discussed. Latest CAM DRT is significantly better than the old transfrom but it’s still visible in many images. The lightsaber image is one good example where one can clearly see a sharp line in the background as it transitions from purple to blue/cyan.
From ZCAM thread for example. I think these are pretty much the same issue.