When keyboard/job doesn't work, that sounds like a USB problem with the computer/controller. I don't think that depends on the software version itself.
For "bad moves" when probing, I've found that the probe routine may move Y rapidly into the part in the "find rectangular part" routine after probing the fourth side, if I start probing the first (left) side at below the midpoint. I e, if the part goes from (-1,-1) to (+1, +1) and I start with the probe at (-1.5, -0.5) then the probe will move "through the part" after probing the -Y side. If I start with the probe at (-1.5, +0.5) then the routine completes correctly.