Hmm, that shouldn't be possible to do without Royal Court enabled. I'll forward it to the rest of the team for investigation.
The majority of players stick to single player, but there is a pretty healthy multiplayer scene if you're interested in that too.
Competitive multiplayer is a little trickier; very few people play CK3 MP competitively, so it can be difficult to find a reliable group if you're looking for that kind of environment.