From watching Aureliens latest video about highlight reconstruction with guided laplacians, my understanding is that the old reconstruct algos (clip, reconstruct in lch) were designed according to the old workflow where white balance was actually set in white balance module. But modern workflow is to leave white balance module at d65 and do white balancing later in color calibration. This means clip highlights and reconstruct in lch are prone to producing weird colours. This might have been somewhat hidden before with filmic v5 desaturating highlights towards white, but is not hidden when using v6, which doesn’t do the desaturation.
So the solution is either
- Use guided laplacians, or
- Use filmic v5, or
- Do the white balance in white balance module, or
- Do the highlight reconstruction in filmic reconstruct tab