Allays do not pick up/give items to a player or a noteblock when the allay is inside a minecart. This is incredibly important for making item filters and other contraptions using the mob on the bedrock edition.
Steps to reproduce:
Put an allay that has an item inside a minecart.
Try giving it an item.
It will not pick up the item or give one back if it already has one in its inventory.
Thank you for your report!
Hovewer, I was not able to reproduce this issue. I was not able to put Allay that is already holding an item into the minecart, When empty-handed Allay was put in it, I was able to give it item, and take it away by right-clicking on mob while empty handed.
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