This fixed the problem:
diff --git java/org/l2jmobius/gameserver/model/actor/knownlist/GuardKnownList.java java/org/l2jmobius/gameserver/model/actor/knownlist/GuardKnownList.java
index d56cc8e..e5ef687 100644
--- java/org/l2jmobius/gameserver/model/actor/knownlist/GuardKnownList.java
+++ java/org/l2jmobius/gameserver/model/actor/knownlist/GuardKnownList.java
@@ -41,6 +40,10 @@
@Override
public boolean addKnownObject(WorldObject object, Creature dropper)
{
+ if (!Config.ALLOW_GUARDS && (object instanceof MonsterInstance))
+ {
+ return false;
+ }
if (!super.addKnownObject(object, dropper))
{
return false;
return true;
}