Private Island party matchmaking always fails after first time

Summary

When testing a private island in a party of 2 players, the first matchmaking/server join works as expected, but subsequent joins never succeed

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Matchmaking

Steps to Reproduce

  • Publish a private island
  • make a party of 2 players
  • find the island by code
  • ready both players
  • matchmaking succeeds within seconds
  • once in game one player leaves for lobby, then the other
  • once both back, ready both again
  • matchmaking never succeeds (gave up after 5 min)

Expected Result

Matchmaking succeeds no matter what

Observed Result

Matchmaking fails (stuck on Finding Server for > 5 min)

Platform(s)

PC

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Additional Notes

I wasnt running fortnite exe directly for player 1, i launched from UEFN, then left the edit session back to lobby then searched the island code
Player 2 was on android though and just joined via party invite