Fix typo in Marlin_main.cpp
@ -1592,7 +1592,7 @@ void refresh_cmd_timeout(void) { previous_millis_cmd = millis(); }
else {
if (retract_zlift > 0.01) {
current_position[Z_AXIS] + =retract_zlift;
current_position[Z_AXIS] += retract_zlift;
#ifdef DELTA
sync_plan_position_delta();
#else