Matchmaking portals broken for parties larger than 1

Summary

When players interact with a matchmaking portal while in a party with more than one player, the matchmaking portal does not function properly.

Please select what you are reporting on:

Creative

What Type of Bug are you experiencing?

Assets

Steps to Reproduce

Join a party with at least two players.
Enter a Creative island containing a matchmaking portal.
Interact with the matchmaking portal.
Ready up for all players

Expected Result

Players matchmake into a new lobby

Observed Result

Party members are sent back to lobby with error message attached. Party leader remains in game.

Platform(s)

All

Island Code

0148-0322-5437

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In my uefn map nara park I cannot launch new game using the portal

The status of FORT-1158612 changed to ‘Needs Triage’. We are routing this to the appropriate team for investigation.