Uploaded image for project: 'Minecraft: Java Edition'
  1. Minecraft: Java Edition
  2. MC-205477

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

    XMLWordPrintable

    Details

    • Type: Bug
    • Status: Resolved
    • Resolution: Fixed
    • Affects Version/s: 1.16.4, 20w45a, 20w46a, 20w49a
    • Fix Version/s: 21w05a
    • Labels:
      None
    • Confirmation Status:
      Confirmed
    • Category:
      Networking

      Description

      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

        Attachments

          Issue Links

            Activity

              People

              Assignee:
              Unassigned Unassigned
              Reporter:
              Kulimi Kulimi
              Votes:
              6 Vote for this issue
              Watchers:
              6 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved:
                CHK: