POE2 BUGS with joystick-multiplay

I am a player who enjoys playing in split-screen mode with my brother. During our split-screen gameplay, we have encountered several issues. I would like to report them to you as follows:

When playing together in split-screen mode, we are unable to reroll rewards in the Ritual Altar(refreshing does not work).
When playing together in split-screen mode, we are unable to designate P1 as the party leader (this causes strange issues, such as being unable to activate Atlas maps).
In certain acts, such as Act 3 and Act 6, there are many strange bugs during split-screen gameplay (e.g., after returning to town, the characters become unresponsive, and NPCs cannot be interacted with).
Among these, issues 1 and 2 are particularly severe. Especially for issue 1, it completely prevents us from enjoying the Ritual Altar as rerolling is not possible. Issue 2 forces my brother to always be the party leader (possibly because his character was created earlier). When you are not the party leader, you cannot view or manage your character's skills, attributes, and other operations in the game.