Z axis on display shows Z at 0 height but is cutting into spoil board

[Aiph5u (Aiph5u (not affiliated with Onefinity))]

Hey stradibarrius,

is it this issue persisting?

If yes, if you checked that it is not a crimped wire loosened or slipped out of pin in the Z stepper cable, did you check the mechanical connection between stepper and ball screw, like here: