Cant think why that would happen if the homing goes the correct way.
When you verify does the DRO also show it going the wrong way?
Have you restarted Mach after your changes?
Hood
Yes I always get the weird ones!
I restarted, and changed the axis direction back and fourth and restarted. The Y axis DRO counts in the direction of movement so it's commanding it to go Y+. Also the Y will keep going until the other 2 axis touch off and then the Y reports back what ever distance it has traveled as it's error.
I really like the verify feature especially when you make changes to the machine and want to keep an eye on error.
Derek