Disconnect kicks me from groups

Whenever I'm in a group and get a client side disconnect, I'm kicked after reconnecting.
It's a big problem in 5man instances. Usually, the person who gets a DC will be in the same grp at the same place after relogging. But not for me. I am always reset to the entrance of the instance and have to get re-invited.
Any idea what causes/fixes this? Thank you
It's a big problem in 5man instances. Usually, the person who gets a DC will be in the same grp at the same place after relogging. But not for me. I am always reset to the entrance of the instance and have to get re-invited.
Any idea what causes/fixes this? Thank you