When in the “ready up” screen (at least in Ball Race), you can’t perform any actions with the chat box via the mouse (clicking on profiles, scrolling through chat, switching tabs).
Steps to Reproduce
Open the chat during the “ready up” screen of a game.
What I expected to happen
You can interact with the chat normally.
What happened
You can type in chat, but can’t perform any functions with the chat box via the mouse.