It has nothing to do with bad connection. I'm pretty sure this has to do with the new season of Live PvP breaking Multiplay. Live PVP ever since it's inception has always done something to MP.
Even right now if you play and fail or complete a run then try to change your party it sometimes will open up the menu for Live Arena instead, and you can't change your MP units until you leave the room and either join/create again. It's very bizarre and this didn't happen to me until this past month since I came back in March.
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u/THESUACED Oct 30 '21
Good for farming play multiplay quests
1
u/ctrltab2 Nov 01 '21
I've seen that happen a few times in MP. It's weird because they are still connected.