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  1. Minecraft: Java Edition
  2. MC-237841

Copying containers with NBT into themselves causes intense server-side lag and eventual crash

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • None
    • 21w11a, 1.17.1, 21w38a, 21w39a, 21w40a, 21w43a, 1.18 Pre-release 1, 1.18 Pre-release 6, 1.18 Release Candidate 1, 1.18, 1.18.1 Release Candidate 1, 1.18.1, 22w07a, 22w12a, 22w17a, 1.19 Pre-release 2, 1.19.2, 1.19.3 Pre-release 3, 1.19.4
    • Confirmed
    • Crash, Performance
    • Important
    • Platform

      The bug

      Copying containers with NBT into themselves causes intense server-side lag and eventual crash.

      To reproduce

      1. Place down a chest (chest A) and put some blocks in it.
      2. Place down another separate chest (chest B).
      3. Ctrl + pick block chest A.
      4. Put the picked chest A into chest B.
      5. Ctrl + pick block chest B.
      6. Put the picked chest B into chest A.
      7. Repeat steps 3 to 6 several times.
      8. Ctrl + pick block chest A and place it into chest A.
      9. Ctrl + pick block chest A and place it into chest B.
      10. Repeat steps 8 and 9.
      11. The game will freeze and crash.

        1. crash-2021-09-28_10.41.14-server.txt
          7 kB
        2. crash-2022-11-29_14.59.35-server.txt
          2 kB
        3. deobf_crash-2021-09-28_10.41.14-server.txt
          10 kB
        4. deobf_crash-2022-11-29_14.59.35-server.txt
          2 kB

            Unassigned Unassigned
            ampolive [Mod] ampolive
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              Created:
              Updated:
              CHK: