[Client] Queue won't start - faulty error "every player must pick their preferred roles"

Like it says in the title; in the lobby I select 2 positions but I am often unable to press "play" because of the error stating that not all players have picked their roles. With me being the only player, I obviously have. It takes a few minutes of mindlessly switching between the lobby and other pages of the client before the 'play' button is no longer greyed out. A numbered, step by step instruction on how to reproduce the bug seems a bit unnecessary; simply load up client on 7.20.204.9809 (I do believe problems started with last 1 or 2 patches), open the lobby in flex Q and select 2 arbitrary positions, and notice how you can't press play.

I encounter the problem about half of the time I'm in the lobby. It gets 'fixed' by frantically changing game types or or switching in and out of the lobby for a few minutes.

I have to admit it is only a minor issue but annoying nonetheless.

Greetings, Bloodarrow