I have a mechanism where the piglin is enclosed in a quarter of 1x2 blocks and the floor is a solid block and when using a dispenser or dropper this when activated releases the gold and obtains it and gives the random item that gives the piglins.
The problem is that if the soil is changed for a hopper or a chest, the piglin no longer reacts to the gold released by the mechanism and goes directly to the hopper and does not trade the piglin.
Even placing a hopper then a wool carpet and then the piglin and the mechanism is activated, it does not take the gold and does not exchange this did not happen in previous versions since in previous versions it allowed the trade with a hopper under the piglin or a carpet under the piglin but in this version it no longer works so it is a bug since in java it continues to work even when it has a hopper under the piglin.