The word mixed describes a programme's intended combination, not unrestricted permission to wash every textile together. The least tolerant item may determine the safe temperature, movement and spin for the whole load.
Understanding this situation
Cotton, synthetic fibres, stretch finishes and delicate trims can have different limits even when the garments look similar. Colour transfer is another issue that a programme label cannot prevent by itself. A load can meet the machine's weight limit and still be unsuitable because the items need incompatible treatment.
A useful next step
Sort according to the clothing instructions and the programme table. Remove items whose colour, trim or wash restrictions cannot be accommodated, rather than assuming the machine will identify them automatically. If one garment is damaged while the rest of the load is normal, record its individual care label and construction as well as the selected wash.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.