Program: 96734
Project: 96734
Buggy source:
@Override public PEPacket[] translateToPE(Message message){
  if (message.getClass().getSimpleName().contains("String_Node_Str") || message.getClass().getSimpleName().contains("String_Node_Str") || message.getClass().getSimpleName().contains("String_Node_Str")) {
    System.out.print("String_Node_Str" + message.getClass().getSimpleName());
  }
  if (message instanceof ChatMessage) {
    String msg=((ChatMessage)message).text.asPlaintext();
    MessagePacket pkMessage=new MessagePacket();
    pkMessage.sender="String_Node_Str";
    pkMessage.message=msg;
    return new PEPacket[]{pkMessage};
  }
  if (message instanceof RelativeEntityPositionMessage) {
    RelativeEntityPositionMessage msgRelativeEntityPosition=((RelativeEntityPositionMessage)message);
    Entity entity=this.getSession().getPlayer().getWorld().getEntityManager().getEntity(msgRelativeEntityPosition.id);
    if (entity instanceof GlowPlayer) {
      boolean isTeleport=Math.sqrt(msgRelativeEntityPosition.deltaX ^ 2 + msgRelativeEntityPosition.deltaY ^ 2 + msgRelativeEntityPosition.deltaZ ^ 2) > 2;
      MovePlayerPacket pkMovePlayer=new MovePlayerPacket(msgRelativeEntityPosition.id,(float)entity.getLocation().getX(),(float)entity.getLocation().getY(),(float)entity.getLocation().getZ(),entity.getLocation().getYaw(),entity.getLocation().getPitch(),entity.getLocation().getYaw(),isTeleport);
      return new PEPacket[]{pkMovePlayer};
    }
 else {
      return null;
    }
  }
  if (message instanceof SpawnPlayerMessage) {
    SpawnPlayerMessage msgSpawnPlayer=(SpawnPlayerMessage)message;
    AddPlayerPacket pkAddPlayer=new AddPlayerPacket();
    pkAddPlayer.clientID=0;
    pkAddPlayer.eid=msgSpawnPlayer.getId();
    pkAddPlayer.username=this.getSession().getServer().getPlayer(msgSpawnPlayer.getUuid()).getDisplayName();
    pkAddPlayer.x=(float)msgSpawnPlayer.getX();
    pkAddPlayer.y=(float)msgSpawnPlayer.getY();
    pkAddPlayer.z=(float)msgSpawnPlayer.getZ();
    pkAddPlayer.yaw=(msgSpawnPlayer.getRotation() % 360 + 360) % 360;
    pkAddPlayer.pitch=msgSpawnPlayer.getPitch();
    pkAddPlayer.unknown1=0;
    pkAddPlayer.unknown2=0;
    pkAddPlayer.metadata=EntityMetaData.getMetaDataFromPlayer((GlowPlayer)this.getSession().getPlayer().getWorld().getEntityManager().getEntity(msgSpawnPlayer.getId()));
    return new PEPacket[]{pkAddPlayer};
  }
  if (message instanceof StateChangeMessage) {
    if (((StateChangeMessage)message).reason == StateChangeMessage.Reason.GAMEMODE.ordinal()) {
      StartGamePacket pkStartGame=new StartGamePacket();
      pkStartGame.eid=this.getSession().getPlayer().getEntityId();
      pkStartGame.gamemode=((int)((StateChangeMessage)message).value) & 0x1;
      pkStartGame.seed=0;
      pkStartGame.generator=1;
      pkStartGame.spawnX=this.getSession().getPlayer().getWorld().getSpawnLocation().getBlockX();
      pkStartGame.spawnY=this.getSession().getPlayer().getWorld().getSpawnLocation().getBlockY();
      pkStartGame.spawnZ=this.getSession().getPlayer().getWorld().getSpawnLocation().getBlockZ();
      pkStartGame.x=(float)this.getSession().getPlayer().getLocation().getX();
      pkStartGame.y=(float)this.getSession().getPlayer().getLocation().getY();
      pkStartGame.z=(float)this.getSession().getPlayer().getLocation().getZ();
      return new PEPacket[]{pkStartGame};
    }
  }
  if (message instanceof OpenWindowMessage) {
    OpenWindowMessage msgOpenWindow=(OpenWindowMessage)message;
    byte typePE=InventoryType.PEInventory.toPEInventory(InventoryType.PCInventory.fromString(msgOpenWindow.type),msgOpenWindow.slots);
    if (typePE == (byte)0xFF) {
      CloseWindowMessage msgCloseWindow=new CloseWindowMessage(msgOpenWindow.id);
      this.getSession().messageReceived(msgCloseWindow);
      return null;
    }
    WindowOpenPacket pkOpenWindow=new WindowOpenPacket();
    pkOpenWindow.windowID=(byte)(msgOpenWindow.id & 0xFF);
    pkOpenWindow.type=typePE;
    pkOpenWindow.slots=(byte)(msgOpenWindow.slots & 0xFFFF);
    pkOpenWindow.x=this.getSession().getPlayer().getLocation().getBlockX();
    pkOpenWindow.y=this.getSession().getPlayer().getLocation().getBlockY();
    pkOpenWindow.z=this.getSession().getPlayer().getLocation().getBlockZ();
    this.cachedWindowType[msgOpenWindow.id & 0xFF]=typePE;
    return new PEPacket[]{pkOpenWindow};
  }
  if (message instanceof SetWindowContentsMessage) {
    SetWindowContentsMessage msgWindowContents=(SetWindowContentsMessage)message;
    if (msgWindowContents.id == 0) {
      WindowItemsPacket pkInventory=new WindowItemsPacket();
      pkInventory.windowID=PEWindowConstantID.PLAYER_INVENTORY;
      pkInventory.slots=new PEInventorySlot[InventoryType.SlotSize.PLAYER];
      for (int i=9; i <= 44; i++) {
        if (msgWindowContents.items[i] != null) {
          pkInventory.slots[i - 9]=new PEInventorySlot((short)(msgWindowContents.items[i].getTypeId() & 0xFFFF),(byte)(msgWindowContents.items[i].getAmount() & 0xFF),msgWindowContents.items[i].getDurability());
        }
 else {
          pkInventory.slots[i - 9]=new PEInventorySlot();
        }
      }
      pkInventory.hotbar=new PEInventorySlot[9];
      for (int i=36; i <= 44; i++) {
        if (msgWindowContents.items[i] != null) {
          pkInventory.hotbar[i - 36]=new PEInventorySlot((short)(msgWindowContents.items[i].getTypeId() & 0xFFFF),(byte)(msgWindowContents.items[i].getAmount() & 0xFF),msgWindowContents.items[i].getDurability());
        }
 else {
          pkInventory.hotbar[i - 36]=new PEInventorySlot();
        }
      }
      WindowItemsPacket pkArmorInv=new WindowItemsPacket();
      pkArmorInv.windowID=PEWindowConstantID.PLAYER_ARMOR;
      pkArmorInv.slots=new PEInventorySlot[4];
      for (int i=5; i <= 8; i++) {
        if (msgWindowContents.items[i] != null) {
          pkArmorInv.slots[i - 5]=new PEInventorySlot((short)(msgWindowContents.items[i].getTypeId() & 0xFFFF),(byte)(msgWindowContents.items[i].getAmount() & 0xFF),msgWindowContents.items[i].getDurability());
        }
 else {
          pkArmorInv.slots[i - 5]=new PEInventorySlot();
        }
      }
      if (this.getSession().getSentAndReceivedChunks() != -1) {
        this.getSession().getQueueAfterChunkSent().add(pkInventory);
        this.getSession().getQueueAfterChunkSent().add(pkArmorInv);
      }
 else {
        return new PEPacket[]{pkInventory,pkArmorInv};
      }
      return null;
    }
    System.out.println("String_Node_Str" + msgWindowContents.id + "String_Node_Str"+ msgWindowContents.items.length+ "String_Node_Str");
  }
  if (message instanceof SetWindowSlotMessage) {
    SetWindowSlotMessage msgSetSlot=(SetWindowSlotMessage)message;
    if (this.cachedWindowType[msgSetSlot.id & 0xFF] == -1) {
      return null;
    }
    int targetSlot=msgSetSlot.slot;
    WindowSetSlotPacket pkSetSlot=new WindowSetSlotPacket();
    pkSetSlot.windowID=(byte)(msgSetSlot.id & 0xFF);
    pkSetSlot.slot=(short)(targetSlot & 0xFFFF);
    pkSetSlot.item=new PEInventorySlot((short)(msgSetSlot.item.getTypeId() & 0xFFFF),(byte)(msgSetSlot.item.getAmount() & 0xFF),msgSetSlot.item.getDurability());
    return new PEPacket[]{pkSetSlot};
  }
  if (message instanceof CloseWindowMessage) {
    CloseWindowMessage msgCloseWindow=(CloseWindowMessage)message;
    if (msgCloseWindow.id != 0) {
      this.cachedWindowType[msgCloseWindow.id & 0xFF]=-1;
    }
    WindowClosePacket pkCloseWindow=new WindowClosePacket();
    pkCloseWindow.windowID=(byte)(msgCloseWindow.id & 0xFF);
    return new PEPacket[]{pkCloseWindow};
  }
  return null;
}

Fixed version (ground truth):
@Override public PEPacket[] translateToPE(Message message){
  if (message.getClass().getSimpleName().contains("String_Node_Str") || message.getClass().getSimpleName().contains("String_Node_Str") || message.getClass().getSimpleName().contains("String_Node_Str")) {
    System.out.print("String_Node_Str" + message.getClass().getSimpleName());
  }
  if (message instanceof KickMessage) {
    return new PEPacket[]{new DisconnectPacket()};
  }
  if (message instanceof ChatMessage) {
    String msg=((ChatMessage)message).text.asPlaintext();
    MessagePacket pkMessage=new MessagePacket();
    pkMessage.sender="String_Node_Str";
    pkMessage.message=msg;
    return new PEPacket[]{pkMessage};
  }
  if (message instanceof RelativeEntityPositionMessage) {
    RelativeEntityPositionMessage msgRelativeEntityPosition=((RelativeEntityPositionMessage)message);
    Entity entity=this.getSession().getPlayer().getWorld().getEntityManager().getEntity(msgRelativeEntityPosition.id);
    if (entity instanceof GlowPlayer) {
      boolean isTeleport=Math.sqrt(msgRelativeEntityPosition.deltaX ^ 2 + msgRelativeEntityPosition.deltaY ^ 2 + msgRelativeEntityPosition.deltaZ ^ 2) > 2;
      MovePlayerPacket pkMovePlayer=new MovePlayerPacket(msgRelativeEntityPosition.id,(float)entity.getLocation().getX(),(float)entity.getLocation().getY(),(float)entity.getLocation().getZ(),entity.getLocation().getYaw(),entity.getLocation().getPitch(),entity.getLocation().getYaw(),isTeleport);
      return new PEPacket[]{pkMovePlayer};
    }
 else {
      return null;
    }
  }
  if (message instanceof SpawnPlayerMessage) {
    SpawnPlayerMessage msgSpawnPlayer=(SpawnPlayerMessage)message;
    AddPlayerPacket pkAddPlayer=new AddPlayerPacket();
    pkAddPlayer.clientID=0;
    pkAddPlayer.eid=msgSpawnPlayer.getId();
    pkAddPlayer.username=this.getSession().getServer().getPlayer(msgSpawnPlayer.getUuid()).getDisplayName();
    pkAddPlayer.x=(float)msgSpawnPlayer.getX();
    pkAddPlayer.y=(float)msgSpawnPlayer.getY();
    pkAddPlayer.z=(float)msgSpawnPlayer.getZ();
    pkAddPlayer.yaw=(msgSpawnPlayer.getRotation() % 360 + 360) % 360;
    pkAddPlayer.pitch=msgSpawnPlayer.getPitch();
    pkAddPlayer.unknown1=0;
    pkAddPlayer.unknown2=0;
    pkAddPlayer.metadata=EntityMetaData.getMetaDataFromPlayer((GlowPlayer)this.getSession().getPlayer().getWorld().getEntityManager().getEntity(msgSpawnPlayer.getId()));
    return new PEPacket[]{pkAddPlayer};
  }
  if (message instanceof StateChangeMessage) {
    if (((StateChangeMessage)message).reason == StateChangeMessage.Reason.GAMEMODE.ordinal()) {
      StartGamePacket pkStartGame=new StartGamePacket();
      pkStartGame.eid=this.getSession().getPlayer().getEntityId();
      pkStartGame.gamemode=((int)((StateChangeMessage)message).value) & 0x1;
      pkStartGame.seed=0;
      pkStartGame.generator=1;
      pkStartGame.spawnX=this.getSession().getPlayer().getWorld().getSpawnLocation().getBlockX();
      pkStartGame.spawnY=this.getSession().getPlayer().getWorld().getSpawnLocation().getBlockY();
      pkStartGame.spawnZ=this.getSession().getPlayer().getWorld().getSpawnLocation().getBlockZ();
      pkStartGame.x=(float)this.getSession().getPlayer().getLocation().getX();
      pkStartGame.y=(float)this.getSession().getPlayer().getLocation().getY();
      pkStartGame.z=(float)this.getSession().getPlayer().getLocation().getZ();
      return new PEPacket[]{pkStartGame};
    }
  }
  if (message instanceof OpenWindowMessage) {
    OpenWindowMessage msgOpenWindow=(OpenWindowMessage)message;
    byte typePE=InventoryType.PEInventory.toPEInventory(InventoryType.PCInventory.fromString(msgOpenWindow.type),msgOpenWindow.slots);
    if (typePE == (byte)0xFF) {
      CloseWindowMessage msgCloseWindow=new CloseWindowMessage(msgOpenWindow.id);
      this.getSession().messageReceived(msgCloseWindow);
      return null;
    }
    WindowOpenPacket pkOpenWindow=new WindowOpenPacket();
    pkOpenWindow.windowID=(byte)(msgOpenWindow.id & 0xFF);
    pkOpenWindow.type=typePE;
    pkOpenWindow.slots=(byte)(msgOpenWindow.slots & 0xFFFF);
    pkOpenWindow.x=this.getSession().getPlayer().getLocation().getBlockX();
    pkOpenWindow.y=this.getSession().getPlayer().getLocation().getBlockY();
    pkOpenWindow.z=this.getSession().getPlayer().getLocation().getBlockZ();
    this.cachedWindowType[msgOpenWindow.id & 0xFF]=typePE;
    return new PEPacket[]{pkOpenWindow};
  }
  if (message instanceof SetWindowContentsMessage) {
    SetWindowContentsMessage msgWindowContents=(SetWindowContentsMessage)message;
    if (msgWindowContents.id == 0) {
      WindowItemsPacket pkInventory=new WindowItemsPacket();
      pkInventory.windowID=PEWindowConstantID.PLAYER_INVENTORY;
      pkInventory.slots=new PEInventorySlot[InventoryType.SlotSize.PLAYER];
      for (int i=9; i <= 44; i++) {
        if (msgWindowContents.items[i] != null) {
          pkInventory.slots[i - 9]=new PEInventorySlot((short)(msgWindowContents.items[i].getTypeId() & 0xFFFF),(byte)(msgWindowContents.items[i].getAmount() & 0xFF),msgWindowContents.items[i].getDurability());
        }
 else {
          pkInventory.slots[i - 9]=new PEInventorySlot();
        }
      }
      pkInventory.hotbar=new PEInventorySlot[9];
      for (int i=36; i <= 44; i++) {
        if (msgWindowContents.items[i] != null) {
          pkInventory.hotbar[i - 36]=new PEInventorySlot((short)(msgWindowContents.items[i].getTypeId() & 0xFFFF),(byte)(msgWindowContents.items[i].getAmount() & 0xFF),msgWindowContents.items[i].getDurability());
        }
 else {
          pkInventory.hotbar[i - 36]=new PEInventorySlot();
        }
      }
      WindowItemsPacket pkArmorInv=new WindowItemsPacket();
      pkArmorInv.windowID=PEWindowConstantID.PLAYER_ARMOR;
      pkArmorInv.slots=new PEInventorySlot[4];
      for (int i=5; i <= 8; i++) {
        if (msgWindowContents.items[i] != null) {
          pkArmorInv.slots[i - 5]=new PEInventorySlot((short)(msgWindowContents.items[i].getTypeId() & 0xFFFF),(byte)(msgWindowContents.items[i].getAmount() & 0xFF),msgWindowContents.items[i].getDurability());
        }
 else {
          pkArmorInv.slots[i - 5]=new PEInventorySlot();
        }
      }
      if (this.getSession().getSentAndReceivedChunks() != -1) {
        this.getSession().getQueueAfterChunkSent().add(pkInventory);
        this.getSession().getQueueAfterChunkSent().add(pkArmorInv);
      }
 else {
        return new PEPacket[]{pkInventory,pkArmorInv};
      }
      return null;
    }
    System.out.println("String_Node_Str" + msgWindowContents.id + "String_Node_Str"+ msgWindowContents.items.length+ "String_Node_Str");
  }
  if (message instanceof SetWindowSlotMessage) {
    SetWindowSlotMessage msgSetSlot=(SetWindowSlotMessage)message;
    if (this.cachedWindowType[msgSetSlot.id & 0xFF] == -1) {
      return null;
    }
    int targetSlot=msgSetSlot.slot;
    WindowSetSlotPacket pkSetSlot=new WindowSetSlotPacket();
    pkSetSlot.windowID=(byte)(msgSetSlot.id & 0xFF);
    pkSetSlot.slot=(short)(targetSlot & 0xFFFF);
    pkSetSlot.item=new PEInventorySlot((short)(msgSetSlot.item.getTypeId() & 0xFFFF),(byte)(msgSetSlot.item.getAmount() & 0xFF),msgSetSlot.item.getDurability());
    return new PEPacket[]{pkSetSlot};
  }
  if (message instanceof CloseWindowMessage) {
    CloseWindowMessage msgCloseWindow=(CloseWindowMessage)message;
    if (msgCloseWindow.id != 0) {
      this.cachedWindowType[msgCloseWindow.id & 0xFF]=-1;
    }
    WindowClosePacket pkCloseWindow=new WindowClosePacket();
    pkCloseWindow.windowID=(byte)(msgCloseWindow.id & 0xFF);
    return new PEPacket[]{pkCloseWindow};
  }
  return null;
}