Do you see steam exiting from around the door?
When baking foods with high moisture content, steam may be seen escaping around the top of the oven door during use. There is no seal around the Countertop Oven door as there is in a full-sized oven, so the steam can escape around the door where it would not in a full-sized oven. Since there is no seal, there is a small gap. It is normal to see steam, and the cooking results are not compromised.