Welp, after all this time, the menu still bugs out when the accept button pops up while waiting for a ranked match. Upon pressing the accept button, it clicks (visually) but nothing happens, and you can’t do anything but watch the time-limit count down. Once the button goes away, the rest of the menu ui becomes just as useless, and the only way to exit the game is to alt-tab out. Once you boot back up, you’re prompt with a ban to add insult to injury.
It doesn’t happen every-time, but happens pretty consistently. I’ve heard it only happens if you alt-tab or use the steam browser, but it’s happened even if I didn’t do either of those things. It’s also worked perfectly fine if while I have used those things.
Edit: Just saw the mega-thread for ranked bug reporting after posting this, so I posted there as well.