Ye, they have some... uh... issues.
Like how dungeon loot / chests are implemented.
- boss drops are not much
- better drops are got from chest
- chests are only for person who opens it and they disappear after opening/looting
- trolls can just ignore fighting and run to open chests l while others try to kill boss / trash
- if you kick troll from your party, he will stay in the instance even when he/she is not in your party
- when you invite another person to replace troll, person is places in separate instance since your instance still has 5 players (since kicked person stays in the instance)
Wonderful design. XD
Here is video about it: