Hasselblad X1D: Autofocus Errors with Hasselblad XCD 90mm f/3.2 Update: Confirmed, Hasselblad Working On It
See Hasselblad X1D: Unacceptable Autofocus Errors with XCD 90mm f/3.2.
Hasselblad has confirmed the issue and is working on it.
The errors relate to the way autofocus interacts with the spatial frequency of the subject. This fits well with my field observations of the type of subject matter on with the X1D misbehaved.