SpigotCore_Main/src/de/steamwar/command/SubCommand.java

@@ -89,6 +89,7 @@ class SubCommand {
                     }
                 }
                 commandPart.guardCheck(commandSender, args, 0);
+                for (int i = 0; i < subCommand.length; i++) objects.remove(0);
                 objects.add(0, commandSenderFunction.apply(commandSender));
                 method.setAccessible(true);
                 method.invoke(swCommand, objects.toArray());