When passing on a pile with a bicycle from "[B42] Bicycle!" created by "RedChili", the container upgrades of the bike, such as saddlebags, crates and baskets, those get absorbed by the pile while staying on the bike, and create a ghost duplicate of those containers that appear as containers inside the pile but not as items, making the pile permanently remain without a possibility to remove those ghost containers.
(Sorry if this report is unnecessarily wordy, English ain't my first language)