I think there’s been a spate of issues lately where the laser head is further to the right than the software thinks. Here’s another example where something similar happened…
I think I saw another one, if I remember any of the details about it I’ll search for it and post a link.
Apparently, sometimes the X axis (the gantry) is so far out of alignment with the case that it causes the head to make contact with the front of the enclosure during normal operation. This friction can cause steps (and therefore positioning) to be lost.
Had you cut anything toward the front of the machine since the last time it had been “calibrated”?