Long narrow pieces can wrap around other garments as the load moves. The resulting knot can leave protected folds less well rinsed and may make later water removal uneven, without proving that the drum mechanism has failed.
Understanding this situation
Review the load composition and the programme's permitted quantity. A dense bundle of similar long items behaves differently from loose ordinary laundry. Preparation or a suitable laundry bag can help some garments where their care instructions permit it, but a bag must not be packed tightly enough to create another solid bundle.
A useful next step
Untangle items only after the machine has finished and the door opens normally. Do not reach into a moving drum. Note whether the problem follows one particular textile mix or accompanies a changed noise, damaged garment or repeated spin difficulty; those extra observations can alter what needs checking at a repair visit.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.