--- a/net/minecraft/server/DispenserRegistry.java
+++ b/net/minecraft/server/DispenserRegistry.java
@@ -7,6 +7,16 @@
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
+// CraftBukkit start
+import java.util.List;
+import org.bukkit.Location;
+import org.bukkit.TreeType;
+import org.bukkit.craftbukkit.inventory.CraftItemStack;
+import org.bukkit.craftbukkit.util.DummyGeneratorAccess;
+import org.bukkit.event.block.BlockDispenseEvent;
+import org.bukkit.event.world.StructureGrowEvent;
+// CraftBukkit end
+
 public class DispenserRegistry {
 
     public static final PrintStream a = System.out;
@@ -31,6 +41,69 @@
                     TagStatic.b();
                     d();
                 }
+                // CraftBukkit start - easier than fixing the decompile
+                DataConverterFlattenData.map(1008, "{Name:'minecraft:oak_sign',Properties:{rotation:'0'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'0'}}");
+                DataConverterFlattenData.map(1009, "{Name:'minecraft:oak_sign',Properties:{rotation:'1'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'1'}}");
+                DataConverterFlattenData.map(1010, "{Name:'minecraft:oak_sign',Properties:{rotation:'2'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'2'}}");
+                DataConverterFlattenData.map(1011, "{Name:'minecraft:oak_sign',Properties:{rotation:'3'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'3'}}");
+                DataConverterFlattenData.map(1012, "{Name:'minecraft:oak_sign',Properties:{rotation:'4'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'4'}}");
+                DataConverterFlattenData.map(1013, "{Name:'minecraft:oak_sign',Properties:{rotation:'5'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'5'}}");
+                DataConverterFlattenData.map(1014, "{Name:'minecraft:oak_sign',Properties:{rotation:'6'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'6'}}");
+                DataConverterFlattenData.map(1015, "{Name:'minecraft:oak_sign',Properties:{rotation:'7'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'7'}}");
+                DataConverterFlattenData.map(1016, "{Name:'minecraft:oak_sign',Properties:{rotation:'8'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'8'}}");
+                DataConverterFlattenData.map(1017, "{Name:'minecraft:oak_sign',Properties:{rotation:'9'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'9'}}");
+                DataConverterFlattenData.map(1018, "{Name:'minecraft:oak_sign',Properties:{rotation:'10'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'10'}}");
+                DataConverterFlattenData.map(1019, "{Name:'minecraft:oak_sign',Properties:{rotation:'11'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'11'}}");
+                DataConverterFlattenData.map(1020, "{Name:'minecraft:oak_sign',Properties:{rotation:'12'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'12'}}");
+                DataConverterFlattenData.map(1021, "{Name:'minecraft:oak_sign',Properties:{rotation:'13'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'13'}}");
+                DataConverterFlattenData.map(1022, "{Name:'minecraft:oak_sign',Properties:{rotation:'14'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'14'}}");
+                DataConverterFlattenData.map(1023, "{Name:'minecraft:oak_sign',Properties:{rotation:'15'}}", "{Name:'minecraft:standing_sign',Properties:{rotation:'15'}}");
+                DataConverterMaterialId.ID_MAPPING.put(323, "minecraft:oak_sign");
+
+                DataConverterFlattenData.map(1440, "{Name:\'minecraft:portal\',Properties:{axis:\'x\'}}", new String[]{"{Name:\'minecraft:portal\',Properties:{axis:\'x\'}}"});
+
+                DataConverterMaterialId.ID_MAPPING.put(409, "minecraft:prismarine_shard");
+                DataConverterMaterialId.ID_MAPPING.put(410, "minecraft:prismarine_crystals");
+                DataConverterMaterialId.ID_MAPPING.put(411, "minecraft:rabbit");
+                DataConverterMaterialId.ID_MAPPING.put(412, "minecraft:cooked_rabbit");
+                DataConverterMaterialId.ID_MAPPING.put(413, "minecraft:rabbit_stew");
+                DataConverterMaterialId.ID_MAPPING.put(414, "minecraft:rabbit_foot");
+                DataConverterMaterialId.ID_MAPPING.put(415, "minecraft:rabbit_hide");
+                DataConverterMaterialId.ID_MAPPING.put(416, "minecraft:armor_stand");
+
+                DataConverterMaterialId.ID_MAPPING.put(423, "minecraft:mutton");
+                DataConverterMaterialId.ID_MAPPING.put(424, "minecraft:cooked_mutton");
+                DataConverterMaterialId.ID_MAPPING.put(425, "minecraft:banner");
+                DataConverterMaterialId.ID_MAPPING.put(426, "minecraft:end_crystal");
+                DataConverterMaterialId.ID_MAPPING.put(427, "minecraft:spruce_door");
+                DataConverterMaterialId.ID_MAPPING.put(428, "minecraft:birch_door");
+                DataConverterMaterialId.ID_MAPPING.put(429, "minecraft:jungle_door");
+                DataConverterMaterialId.ID_MAPPING.put(430, "minecraft:acacia_door");
+                DataConverterMaterialId.ID_MAPPING.put(431, "minecraft:dark_oak_door");
+                DataConverterMaterialId.ID_MAPPING.put(432, "minecraft:chorus_fruit");
+                DataConverterMaterialId.ID_MAPPING.put(433, "minecraft:chorus_fruit_popped");
+                DataConverterMaterialId.ID_MAPPING.put(434, "minecraft:beetroot");
+                DataConverterMaterialId.ID_MAPPING.put(435, "minecraft:beetroot_seeds");
+                DataConverterMaterialId.ID_MAPPING.put(436, "minecraft:beetroot_soup");
+                DataConverterMaterialId.ID_MAPPING.put(437, "minecraft:dragon_breath");
+                DataConverterMaterialId.ID_MAPPING.put(438, "minecraft:splash_potion");
+                DataConverterMaterialId.ID_MAPPING.put(439, "minecraft:spectral_arrow");
+                DataConverterMaterialId.ID_MAPPING.put(440, "minecraft:tipped_arrow");
+                DataConverterMaterialId.ID_MAPPING.put(441, "minecraft:lingering_potion");
+                DataConverterMaterialId.ID_MAPPING.put(442, "minecraft:shield");
+                DataConverterMaterialId.ID_MAPPING.put(443, "minecraft:elytra");
+                DataConverterMaterialId.ID_MAPPING.put(444, "minecraft:spruce_boat");
+                DataConverterMaterialId.ID_MAPPING.put(445, "minecraft:birch_boat");
+                DataConverterMaterialId.ID_MAPPING.put(446, "minecraft:jungle_boat");
+                DataConverterMaterialId.ID_MAPPING.put(447, "minecraft:acacia_boat");
+                DataConverterMaterialId.ID_MAPPING.put(448, "minecraft:dark_oak_boat");
+                DataConverterMaterialId.ID_MAPPING.put(449, "minecraft:totem_of_undying");
+                DataConverterMaterialId.ID_MAPPING.put(450, "minecraft:shulker_shell");
+                DataConverterMaterialId.ID_MAPPING.put(452, "minecraft:iron_nugget");
+                DataConverterMaterialId.ID_MAPPING.put(453, "minecraft:knowledge_book");
+
+                DataConverterSpawnEgg.ID_MAPPING[23] = "Arrow";
+                // CraftBukkit end
             }
         }
     }