So I'm doing my regular deep core runs building up that stage 5 100% and I get this random person I'm duoing with. They got in and started asking me for my name and other weird shit and spamming but I just ignored them, but when we got to the boss, both first and second phases of the boss just stood there in place the entire duration of the fight. Didn't move at all. After the boss got killed there was like a delay between it dying and the results screen popping up. It said that they were sitting in some cutscene or whatever but this guy's level 55 so I'm not really sure what cutscene that could've been at that point. Either way the dungeon ended and I left as normal.
This might just be some weeeeird coincidence, but have there been any known issues with this?
I have screenshots but I'm not gonna upload them at this time because this might really just be a weird coincidence or lag.