G29 Auto Bed Leveling Matrix not "in the middle" of printbed?

[Roxy]

I'm not sure what that video is supposed to show. But if that wasn't a G28 homing the machine, you have done something to push the effector outside of the printable radius. When the effector goes out of bounds on a Delta, it goes up.

Also, did you do a M502 followed by a M500 to initialize your EEPROM?

[Whitey]

Update: I managed to get it "working" like in the first post, so the update to the latest Marlin version didn't help.

The printer still takes probes from a grid which is not in the middle. It looks more like this when probing (green square):




Edit: Finally solved. Just had the probe offset wrong.

Just to let you know: Nevertheless I moved back to Marlin v1.0 because with the newest Marlin, autobed leveling is still messed up..
With the newest marlin version and after G29, my printhead crashed into the bed during printing the first layer at some point.
With marlin v1.0 and exactly the same configuration everything works well during printing.