Also, look for signs of what might have happened. For example, keep the Console tab open and stop the print after the failure than scroll back to see if you see anything in the Console which would explain the stoppage and restart.
There have been changes to lightburn to handle intermittent disconnects and could be why it now doesn’t just fail and stop but restarts with a lost home position.
As mentioned above, bad USB cables are a bane for laser cutting/engraving and especially so during engraving in fill mode as it streams lots and lots of gcode over the usb cable to keep up the speed.
Also know, the Ortur’s have an accelerometer built-in so if things move around too much it’ll stop. It used to just stop and require a reset.