This thread closed since now the official 1.5.0 version is released and Edge is finished it’s cycle!
@DocRM just to finish off your question, the behaviour you saw for the Go To function in Edge 8 was broken and has since been fixed in 1.5.0/1.5.1 where the values now populate correctly and the Z value is fixed. Regarding pressing XY, if you have a machine with homing then make sure you home the machine when you start it up, since otherwise the Z-axis will try to move to the safe height of the homes axis and might move in an unexpected direction instead