A NL and I were ready to go duo Krex (with my BS in party) and when we went inside, there was already another party in there. Not sure if the portal let us go through because they hadn't broken the tree branch yet or what. As you can see it had been 11 minutes since they had been in there. They said didn't break it because one of their party members DC'd and they were bringing another bishop for HS. Just reporting this if its a bug because I thought the portal was not supposed to let anyone go inside unless they were in the first party who went in. Happened Feb 24, 2017 at around 7:00 GMT server time today. Wouldn't wish anyone else to run into this problem because it was a waste of an entrance. IGN of my party if needed: Kaiserinn, iKakashi, and ReinaDeAmor
A maximum of 30 players can enter the map up until the boss is spawned. Bodyguard, Captain Latanica and Papulatus should all also work in the same way although they have different max player limits. I would guess a way to solve this issue would be for the portal to open an NPC window to show a list of players in the map, and to then give you a confirmation option before entering. If this is wanted by players then I'd suggest that a feedback thread be opened about the issue. But as it stands, this is not a bug, since for 30 people to enter we need to allow more than one party.