Light small pieces can move or fall through the rack, potentially blocking movement or becoming difficult to retrieve. Correct containment also helps keep surfaces exposed to washing.
Understanding this situation
Only dishwasher-suitable lids should be used, and their maker may specify a rack location. An ordinary household net or wire tie is not automatically a safe appliance accessory.
A useful next step
Use the designated or compatible holder according to instructions. Check that lids do not nest tightly together. If one is missing after a cycle, stop and inspect safely; do not reach blindly into hidden spaces or continue washing to make it appear.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.