The Nozzle offset seems to be putting the 2nd nozzle much lower than the 1st and when being corrected for it is allowing for individual nozzle adjustments to alter both nozzles.
I flashed to .68, then reset to factory default, then ran a calibration.
The calibration seemed to work accept when it ended and it moves over the square, at that time the nozzle rolls over the square, hitting it.
Then I began a print, This print had a good 1st nozzle bead height but when the 2nd nozzle was so squished it needed over +1.0mm of adjustment.
I would adjust it using the "Nuddge Nozzle", I did make sure to select "no" on the "adjust nozzles together" section.
Then when it would go back to the next layer for the 1st nozzle the nozzle was now printing about 1mm in the air, not making contact with the previous printed layer at all.
This was confirmed on 2 machines of mine, about 5 times each.