The filling, cover and size must all suit the drying process as well as washing. A quilt can be washable yet require a different drying method.
Understanding this situation
A bulky wet item also needs enough room to move during drying. The appliance's washing capacity and the fact that the door closes do not establish the allowed continuous-programme quantity.
A useful next step
Check the quilt label and the model's bulky-item programme limits before starting. If suitability cannot be confirmed, use an appropriate specialist or alternative care method. Do not rely on a longer hot cycle to compensate for an overfilled drum.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.