No valid positions to place object found when attempting to place many small objects on the same plate or bowl

Hello,

I am using ai2thor version 3.1.0 (but have tried later versions as well). We have found a problem with interaction when attempting to place many small objects on the same plate or bowl. We have found that when one or more object (e.g., slices) are already on a bowl or plate, attempting to place another slice on the plate often causes action failure with error message "No valid positions to place object found":
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