Bug: Failed to leave F8

[KlausFlouride]

Has anyone been seeing 'Failed to exit the Dungeon/Battleground Lobby' when trying to leave F8? No, white knights I'm not in a party.

[Hanuku]

Probably server related. I was doing those solo 1v1s at Mushin's and moving through opponents was extremely slow and laggy, and I once got a "cannot get rewards" message.