Yes it does but you only get put in a crossplay lobby if your party is mixed.

On top of going against m/kb players, aim assist for controller is turned off.

It’s really not that enjoyable and highlights why controllers and m/kb shouldn’t be mixed.

It’s like talking a snowboard to a ski jump contest. Snowboards are fun and can do a lot of different things than skis. And in a contest where everyone is snowboarding it’s great. But you’ll never win a jumping contest.