I sometimes make homemade burritos, with a mix of fillings wrapped in a flour tortilla, and I reheat the leftovers in my microwave for later meals. By the time the fillings are near the temperature I want, the section of the tortilla on the bottom, specifically the portion in contact with the plate, is soggy and far too hot.
I've had the soggy part actually break open at least once, and touching it for long is painfully hot. Moving it reveals visible water on the plate underneath. The rest of the tortilla stays dry, with the edges sometimes even getting a bit crispy, and is comfortably warm.
Why does this happen, and how can I prevent or mitigate it?