Hello there is a problem in agit castle.
If you are in different elevation.
The Archer guardian wont attack you unless you attack him.
But with same elevation the archer guardian is aggressive.
I've tried using Rathena emulator and no problem like this happened.
as you can see on the image below.
I hope anyone can focus on this problem.
Things that i've tried:
Changing pre-re to re
Changing mapcache.dat used by rathena.
Ive checked my guild is different with the owner of the castle.