Checklist
Details
1: Player A clicks door, stays in menu
2: Player B, in same party, clicks door also and enters
3: Everybody in party, aside Player A, is taken in
4: If player A tries to go in afterwards, it starts a new instance.
Bug: Should propably take everybody in regardless if they have menu open, but should be checked on retail I suppose.

Checklist
Details
1: Player A clicks door, stays in menu
2: Player B, in same party, clicks door also and enters
3: Everybody in party, aside Player A, is taken in
4: If player A tries to go in afterwards, it starts a new instance.
Bug: Should propably take everybody in regardless if they have menu open, but should be checked on retail I suppose.