I wish I could tell for sure which side (camera or lenses) are off; maybe both.
Just recently got the 50 lux ASPH brand new from a dealer and it seemed highly soft. I only got it as forum members were gushing about how tack sharp it was. I brought it immediately to Leica NJ and while I waited, the tech did confirm it was retrofocusing significantly. It took 2-3 weeks to get it back and that was a rush job. They were very good and responsive.
I tested it last night and it still retrofocuses but much less. The 35 cron ASPH that I just got also seems very, very soft no matter how carefully I focus, even with a 1.25 VF magnifier. Again, retro focuses alot. Out of the 10 ASPH M lenses I have, all purchased new from authorized Leica dealers in the last few years, the majority appear to retrofocus slightly so I think the camera is off a bit. There is a 90 cron ASPH that I bought used that does front focus slightly. Maybe that would worsen if the camera was adjusted so I'll bring that in to be checked.