Hey guys we might found a fix for unoffical servers that suffer from the flying away Dragon in the Ragnarok Bossfight.
find your SAVED folder of your Server
Copy folder "SAVED" to your desktop or an other save folder (not in your server install)
create a NEW Serverinstallation (not a reinstall a complete fresh install from steam)
paste your SAVED folder in the new serverinstallation in the according place
start your server