See the attached image. For a line to go from [0,0.7595,0] to [0,0,0.3965], the ∆Y must be a negative 0.7595, not positive. For some reason I thought the + and - was shown, but apparently that is only for the absolute locations, not the ∆. It appears to be the same for 2D sketches, as well.
I would like to see this not be an absolute value.