Homemade CNC Plasma - hypertherm, Mesa, gear drives, nema 34.

At a guess, something has changed slightly with a home switch and its left triggered. Try editing your HOME_OFFSET on joint 1 in your ini  file and make it a bit bigger, maybe by 0.5 to 1.0 mm. This should move the sensor away a bit  more after homing. Ohh and check for anything loose.