Hhmmn,, saw this in the review:


All three copies of the Canon EF 85mm f/1.2 L II USM Lens I have used
to date show more CA (Chromatic Aberration) than the older 85 L.
And my 85 f/1.8 shows less CA than either version of the 85 L lens.
The 85 II lenses I have used are producing noticeable CA at the widest
apertures when sun glares from something reflective in the shot (such
as a chrome car bumper).
For most applications, the CA will not be a big deal - and removing it
in post-processing is often possible.


Seems it is the nature of the beast. Maybe ND filter a few stops.