temps on your room may be ok but those bulbs radiate a lot of heat, a 1k bulb is some god awful number in the thousands hot on the inside(at ceritan areas)
the constant on and off and high heats can make fualty glass crack and since it is tempered once it cracks it shatters and breakers its a safety measure to prevent large pains of glass cutting your artery's and in this case chopping your plants
email and call and photo the evidence and send it into the fixture company and ask for a explanation and a refund if they are at fualt also they might want the hoods for inspection if you do this, and you may not get hoods rigth back but my buddy did so idk, just assuming not every case is the same