After the new update every time I try to join a game it crashes. Even when I click "Reconnect" in the client. The signal handler offers to make me a crash dump, so something clearly went very wrong. Even joining a game in the practice tool triggers the bug, so it is 100% reproducible and is completely preventing me from playing the game.
I re-installed the game from scratch and have the exact same issue, so the game must not like something about my system. I updated to the latest released Nvidia drivers about a week ago, but otherwise I have a completely stock Windows 10 machine so it isn't like there is some exotic setup causing issues.
I can upload a crash dump somewhere if that's helpful.