No it doesn't. Everyone knows each turn is a separate instance (hence separate time limits, separate area names etc.) and you can't leave an instance without losing loot if it's not been lotted. In every single instance in this game you will lose your loot if you exit the area before it has dropped. There is a text notification when someone has received the loot. Just don't leave an instance (and don't afk!!!) before you've seen the loot going to the correct people and there won't be any problems.