SpigotCore_Main/src/de/steamwar/comms/handlers/InventoryHandler.java

@@ -23,6 +23,7 @@ import com.google.common.io.ByteArrayDataInput;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
+import de.steamwar.core.Core;
 import de.steamwar.inventory.SWInventory;
 import de.steamwar.inventory.SWItem;
 import de.steamwar.sql.SteamwarUser;
@@ -54,8 +55,10 @@ public class InventoryHandler implements BungeeHandler {
 
         SWInventory inventory = new SWInventory(Bukkit.getPlayer(player), size, title, items);
         inventory.addCloseCallback(click -> {
-            if(Bukkit.getPlayer(player).getOpenInventory().getType() == InventoryType.CRAFTING)
-                new InventoryCallbackPacket(player).send(Bukkit.getPlayer(player));
+            Bukkit.getScheduler().runTaskLaterAsynchronously(Core.getInstance(), () -> {
+                if(Bukkit.getPlayer(player).getOpenInventory().getType() != InventoryType.CHEST)
+                    new InventoryCallbackPacket(player).send(Bukkit.getPlayer(player));
+            }, 1);
         });
         inventory.open();
     }

SpigotCore_Main/src/de/steamwar/inventory/SWInventory.java

@@ -28,6 +28,7 @@ import org.bukkit.event.Listener;
 import org.bukkit.event.inventory.InventoryClickEvent;
 import org.bukkit.event.inventory.InventoryCloseEvent;
 import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.InventoryView;
 
 import java.util.ArrayList;
 import java.util.HashMap;