Distinguish passive warmth from active heating, without touching internal parts or running further tests. Record which neighbouring functions were in use and the controls' indicated positions.
What the observation means
Some warmth can transfer within an appliance, but unexpected strong heat, glowing elements or an inability to select Off needs assessment. Do not assume a familiar design explains every change.
A useful next step
Stop using the cooker if heating appears uncontrolled and use safe isolation where appropriate. Provide the cavity, control positions and timing to the engineer. Do not dismantle the selector or rely on leaving that compartment empty as a workaround.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.