Zips, buttons and other metal pieces can feel different from surrounding fabric after drying. Handle laundry according to the safe finishing guidance rather than testing hot parts with bare fingers.
Understanding this situation
The garment must also permit the selected drying process. A hot fastener does not measure the drum's temperature or prove a fault, while melting, scorching or abnormal overall heat remains concerning.
A useful next step
Allow normal cooling to finish and unload carefully. Record unusual heat with the programme and garment details. Do not run another cycle solely to compare how hot different materials feel by touch.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.