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  1. Minecraft: Java Edition
  2. MC-205477

Occasional desync when trying to enter/exit a boat while the server is lagging

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    • Icon: Bug Bug
    • Resolution: Fixed
    • 21w05a
    • 1.16.4, 20w45a, 20w46a, 20w49a
    • None
    • Confirmed
    • Networking

      When entering a boat when sitting in another boat while the server is lagging, it is possible that a client-server-desync occurs, where the client is outside of the boat while the server still considers the player to be inside of it.

      To reproduce

      1. Place a lot of boats in the same place (e.g. activate a repeating command block with the command summon boat ~ ~0.5 ~ for a second)
      2. Cause server lag, e.g. by setting /gamerule randomTickSpeed to a high number (mspt should be above 50)
      3. Right-click the boats repeatedly until you are no longer able to enter them
        → Desync
      4. Walk away
      5. Try to place a block
        → It disappears
      6. Press shift
        → You're teleported back to the boats

        1. Minecraft 1.16.3 - Singleplayer 2020-11-08 22-46-36.mp4
          4.86 MB

            Unassigned Unassigned
            Kulimi Kulimi
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              Created:
              Updated:
              Resolved:
              CHK: