Items pressed together can shield contact surfaces from the wash and rinse. A densely packed basket can therefore leave residue even when other dishes are clean.
Understanding this situation
Follow the basket or tray arrangement for the exact model. The safest orientation for sharp items also matters, so a general instruction about handles should not override the appliance's guidance.
A useful next step
Separate suitable pieces within the provided supports and avoid projecting sharp ends into an unsafe position. Check for nested spoons after unloading. If residue is widespread rather than confined to contact points, include that distinction in the repair enquiry.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.