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  1. Minecraft: Java Edition
  2. MC-41113

/clear turns items held by mouse into ghost items

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    • Icon: Bug Bug
    • Resolution: Fixed
    • Minecraft 19w12a
    • Minecraft 13w48b, Minecraft 1.7.10, Minecraft 14w30c, Minecraft 14w32a, Minecraft 1.8-pre1, Minecraft 1.8-pre2, Minecraft 1.8, Minecraft 1.8.2-pre6, Minecraft 15w34c, Minecraft 15w44b, Minecraft 15w45a, Minecraft 1.8.9, Minecraft 16w04a, Minecraft 16w05b, Minecraft 1.9 Pre-Release 1, Minecraft 1.9 Pre-Release 2, Minecraft 1.9, Minecraft 1.9.2, Minecraft 1.10, Minecraft 1.10.2, Minecraft 16w32a, Minecraft 16w32b, Minecraft 16w33a, Minecraft 16w36a, Minecraft 16w39b, Minecraft 16w39c, Minecraft 16w42a, Minecraft 1.11 Pre-Release 1, Minecraft 1.11.2, Minecraft 17w17b, Minecraft 1.12 Pre-Release 2, Minecraft 1.12, Minecraft 1.12.2, Minecraft 18w05a, Minecraft 18w06a, Minecraft 18w10c, Minecraft 18w15a, Minecraft 18w19a, Minecraft 18w21b, Minecraft 18w22c, Minecraft 1.13-pre1, Minecraft 1.13-pre2, Minecraft 1.13-pre3, Minecraft 1.13-pre4, Minecraft 1.13-pre5, Minecraft 1.13-pre6, Minecraft 1.13-pre8, Minecraft 1.13, Minecraft 18w30b, Minecraft 18w31a, Minecraft 1.13.1-pre1, Minecraft 1.13.1-pre2, Minecraft 1.13.1, Minecraft 1.13.2, Minecraft 18w43b, Minecraft 18w43c, Minecraft 18w44a, Minecraft 18w45a, Minecraft 18w48a, Minecraft 18w48b, Minecraft 18w49a, Minecraft 18w50a, Minecraft 19w02a, Minecraft 19w03c, Minecraft 19w04b, Minecraft 19w05a, Minecraft 19w06a
    • Confirmed

      The bug

      Using /clear while an inventory is open and you are holding an item with your mouse causes an inventory desync and turns this item into a "ghost" item. You can place it in your inventory, but using it will fail in Creative mode and in Adventure and Survival mode additionally removes the item.

      Expected would be that /clear successfully clears the held item client-side as well.

      How to reproduce

      1. Put a repeating command block down with 
        /clear @p torch
      2. Switch to Creative mode 
        /gamemode creative
      3. Grab a stack of torches for example from your Creative inventory and put it in your hotbar
      4. Try placing down torches
        → The torches are not placed

      Code analysis (outdated for 1.13+)

      The following is based on a decompiled version of Minecraft 1.8 using MCP. All method and class names are the ones used in the decompiled version.

      The reason for this is a piece of code in the public void processCommand(ICommandSender sender, String[] args) method of the net.minecraft.command.CommandClearInventory class that only updates the held item once the /clear command was used, if the player is not in Creative mode:

      public void processCommand(ICommandSender sender, String[] args) throws CommandException
{
	EntityPlayerMP var3 = args.length == 0 ? getCommandSenderAsPlayer(sender) : getPlayer(sender, args[0]);
	
	// ...
	
	if (args.length >= 2 && var4 == null)
	{
		throw new CommandException("commands.clear.failure", new Object[] {var3.getName()});
	}
	else
	{
		int var8 = var3.inventory.func_174925_a(var4, var5, var6, var7);
		var3.inventoryContainer.detectAndSendChanges();

		//This prevents the update
		if (!var3.capabilities.isCreativeMode)
		{
			var3.updateHeldItem();
		}

		//...
	}
}

        1. 2013-11-28_20.08.06.png
          2013-11-28_20.08.06.png
          349 kB
        2. 2013-11-28_20.09.55.png
          2013-11-28_20.09.55.png
          310 kB
        3. Minecraft 15w44b 11_1_2015 10_31_08 AM.mp4
          2.73 MB
        4. aufnahme (05).mp4
          3.39 MB
        5. aufnahme (04).mp4
          3.21 MB
        6. aufnahme (06).mp4
          4.12 MB
        7. aufnahme (07).mp4
          4.65 MB

            boq [Mojang] Bartosz Bok
            m124367 AgentM
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              Created:
              Updated:
              Resolved:
              CHK: