Why does my microwave door and handle keep cracking above my gas range?

The cracking of your microwave door and handle above the gas range is likely due to exposure to heat and steam from the stove. When cooking, especially at high temperatures, the heat can warp plastic components or weaken the adhesive used in the microwave's construction. Additionally, if the microwave is not designed to withstand the heat produced by the gas range, this can exacerbate the problem. To prevent further damage, consider relocating the microwave or using a heat shield to protect it from the stove's emissions.