Laser Job Countdown time goes into the Negative

Good evening,
First time post. While running the laser on some files, once in a while I will go look at the progress (currently running 8-minute files) and sometimes I’ll catch it at -0:17 or so and I will hit stop and just proceed like nothing happened and move on to the next piece and run same file and everything is fine. It does not do it all the time and there doesn’t seem to be any repetitive number of tries before it would happen again. Any input is appreciated. Thank you! (New Jtech Unit, 14Watt)