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  1. Minecraft (Bedrock codebase)
  2. MCPE-20243

Inventory Items Disappear While Trading with Villager


    • Icon: Bug Bug
    • Resolution: Duplicate
    • None
    • Community Consensus
    • Phone - Android - HTC One

      I noticed some of my primary inventory items had disappeared on day one of after a long session of testing trading.
      As there are several long standing bugs causing loss of items in one way or other (definately NOT MCPE-15010 happening here!!), I didn't report until I got time to recreate it with meaningful info.


      • Using PE GUI
      • In a single session without exiting the villager trading GUI.
      • Librarian offering 1 emerald at cost of 25 paper.

      Shot1 Inventory before trading: Note slots 1, 2 and 3.

      I cant be sure of the exact additions and trades order as I was fiddling
      and watching how the gui behaved but essentially I was just stuffing the
      input with as much paper as I could, to 64 obviously, then trading as much
      as possible, then topping the input up again by long pressing a full stack
      to refill the input slot. Kept trading until the villager locked out the offer.

      Shot2 Inventory after trading.
      Note that contents of slot 1, 2 and 3 have been overwritten with paper contents.
      The original content of Cooked Pork, Steak and Mutton have disappeared.

      I noticed the following, if for example..

      • I loaded the 43 part stack of paper into the input slot.
      • Trade one emerald.
      • I have 18 paper in the input slot (offer is 25)
      • Long pressed a full stack in invetory to fill input slot to 64 (46 transfer to input slot, then input slot stops incrementing at 64)
      • Release the long press.
        • At this point the GUI animates a movement from the long pressed slot to some slot towards slot 1.
        • As I was TopUp/Trading repeatedly this happened on each top up so several times in total over the trading session.
        • This correlates with the number of inventory slots overwritten and items lost.

      I think the overwrite/loss is happening here while reshuffling the remainder of the long pressed slot back into inventory once the slot is filled and the long press subsequently released.

      Other Info:
      Villager Spawn Versions..
      Not sure if this is a factor..
      I'm not sure on what version all of the villagers were spawned some may have been as far back as 0.14.
      Many of them were "born" and raised on 1.0.4/ as I have been breeding and selectively culling the villagers to shape the professions of the population and improve randomized elements of the offers.
      I can post villager NBT data From MCPEViz logs if it helps debug.

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        5. Case2-5.png
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        6. Shot1.png
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        7. Shot2.png
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            Smeo00 Mr Smeo
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