There was a recent firmware update that activated additional sensors in the Glowforge that had previously been dormant. I believe there was some mention of using infrared sensors in the lid to detect flare-ups, although they could simply be referring to the CCD in the camera. They may also be measuring the temperature at various points inside the machine.
I operate my Glowforge in my basement where the ambient room temperature is generally in the
50s or 60s. I’ve had it be too cold to operate, but rarely too hot. I have seen reports that people who have the Glowforge in a garage have had problems starting when the temperature is in the mid-to-high 70s.
I could be wrong, but I believe many of the changes that pause a print job midway are recent.