MCPE-57558Minecarts with Hoppers pass items without being on same X or Z.
When 2 minecarts with hoppers that are 1 Y level different but on parallel tracks pass by one another the upper hopper cart passes items to the lower hopper cart.
For reference, this would be a typical setup for a basic auto smelter. About 50% of the smelting items are ending up in the fuel hoppers that feed the furnaces.
I locked the upper hoppers and I was able to observe items passing to the lower minecart despite the lower minecart being -1x, -1y, 0z offset from the upper cart.
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Minecarts with Hoppers pass items without being on same X or Z.
When 2 minecarts with hoppers that are 1 Y level different but on parallel tracks pass by one another the upper hopper cart passes items to the lower hopper cart.
For reference, this would be a typical setup for a basic auto smelter. About 50% of the smelting items are ending up in the fuel hoppers that feed the furnaces.
I locked the upper hoppers and I was able to observe items passing to the lower minecart despite the lower minecart being -1x, -1y, 0z offset from the upper cart.
![[MCPE Mod] Celesian](../../../data/avatars/users/81635.png){kind=small}
The image above is a very simple way to observe this bug. Fill each hopper with a different stack of items and you can watch them transfer from one hopper to the other. Make sure you make one rail a little longer than the other so they will eventually cross with the right timing.
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We're tracking this issue in MCPE-57637, so this ticket is being resolved and linked as a duplicate.
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