Unkillable monster after destroying their Tower / "house" / jail

Bug Name:

Unkillable monster after destroying their Tower / "house" / jail​

Bug Description:

i can't kill some monster after i destroy their tower / house / jail ,
for exemple : if you destroy "witch tower" in Hexe sanctuary, the skeleton spawned before by this tower are going to be unkillable, same thing happen at Crescent / pilaku / and some other place who monster spawn from a tower/ house / jail / etc...​

How to reproduce/proof:

try it at hexe sanctuary , kill the witch tower before killing the skeleton spawned from it , then try to kill the skeleton.

solution from retail is : when the tower / house / jail / etc... is destroyed , you get exp + loot from it , and all the monsters spawned from it disapear (you dont get loot or exp from the monsters).​

 

Same at crescent shrine. You break their little base(Crescent Repository iirc) and the mobs get stuck. Usually, they would disappear into thin air...

 

Sometimes they disappear (as they should) but yea, most times they just stay there, unkillable.

 

oops , rectification, from retail is : when you kill the jail , (you get loot) and then you are able to continu to kill the spawned monster and loot . ( exemple pilaku , jail > executioner / frenzied executioner )