uniform disc dropper respawns

src/engine/mobileAI/MobAI.java

@@ -846,7 +846,9 @@ public class MobAI {
     private static void CheckForRespawn(Mob aiAgent) {
 
         try {
-
+            if(Mob.disciplineDroppers.contains(aiAgent) == true){
+                return; // disc dropper respawns handled elsewhere
+            }
             if (aiAgent.deathTime == 0) {
                 aiAgent.setDeathTime(System.currentTimeMillis());
                 return;