Since release: Lobby "Ready" button stuck.

So, this is something that annoys both me and my team. Sometimes, after leaving the match, my game seems to be unable to connect with the party. Players in the lobby still have "In Match" text, even though they aren't. When I press the Ready button - they see me being ready, but I don't. If we find a game in that state - then only they would connect as a group of two, without me. I don't see ready check mark after pressing the button. It is fixed by re-joining the lobby, but it's also buggy. The game still sees me as being in the party after leaving, so I can only join by invites, because the "Join" button is blocked by the fact the the party is full. While fixable, I want to know what causes this, as I haven't been able to find anyone with the same issue (or Google shows the other problem that has the same keywords). 

Another problem is that sometimes, the party join in match before me. I have a chance at loading later, sometimes in the middle of a drop, but it doesn't always work. Once again, I want to know how I can fix it or what causes it so I can avoid it.