Smart effector strange Z offset

Goretec

How can this be?
Z offset 0.8
It was 0.148 before.
Checked all bolts and belts

Set the nozzle to Just Kiss the bed.
Set Z to 0

Go up 5 mm
G30 S-1.
10 times without homing.

calculated Z offset.0.8.....

Delta
Duet WiFi
Duet smart effector
Haydin rods

Phaedrux

Can you share some more specific details like config files and macros so we can see what is actually going on?

config.g, homedelta.g, bed.g, and the results of M122 and M98 P"config.g" are a good start.