See Invis Bug Addressed

src/engine/mobileAI/MobAI.java

@@ -48,7 +48,12 @@ public class MobAI {
                 mob.setCombatTarget(null);
                 return;
             }
-
+            if (target.getObjectType() == Enum.GameObjectType.PlayerCharacter){
+                if(((PlayerCharacter)target).getHidden() > 0){
+                    mob.setCombatTarget(null);
+                    return;
+                }
+            }
             if (target.getObjectType() == Enum.GameObjectType.PlayerCharacter && canCast(mob)) {
 
                 if (mob.isPlayerGuard() == false && MobCast(mob)) {
@@ -736,7 +741,7 @@ public class MobAI {
 
                 //Player is Dead, Mob no longer needs to attempt to aggro. Remove them from aggro map.
 
-                if (!loadedPlayer.isAlive()) {
+                if (!loadedPlayer.isAlive() || loadedPlayer.getHidden() > 0) {
                     loadedPlayers.remove(playerID);
                     continue;
                 }
@@ -978,7 +983,12 @@ public class MobAI {
     private static void chaseTarget(Mob mob) {
 
         try {
-
+            if (mob.combatTarget.getObjectType() == Enum.GameObjectType.PlayerCharacter){
+                if(((PlayerCharacter)mob.combatTarget).getHidden() > 0){
+                    mob.setCombatTarget(null);
+                    return;
+                }
+            }
             float rangeSquared = mob.getRange() * mob.getRange();
             float distanceSquared = mob.getLoc().distanceSquared2D(mob.getCombatTarget().getLoc());