randomly, when first opening chests in ships it does not display the loot. it shows second time. also if you click the spots and it finds a spot that has a item it will refresh and show all of the items.
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Similar behaviour here + lag spike upon first opening. So far every chest this happened with had a buried treasure map.
Ditto; closing and reopening works
Likely duplicate of MC-126244
I also have had this issue.