If there is an air gap between the heater and the bed, the heater pad is likely heating very quickly and “overshooting” the set point. Hence the 124 temp when you had it set for 110. The pad needs good contact with the bed for the heat to transfer from the pad to the glass, and without the thermal mass of the glass the pad itself will heat very quickly.
I recommend contacting Lulzbot support. If the heater has separated from the glass, I would expect them to replace the bed under warranty.
YMMV is “Your Mileage May Vary”. Internet slang for “That’s what I’ve experienced, but your experience may be different from mine.”