Version: 0.311

*To avoid confusion, I will use Escape to mean the function as named in the Controls settings (to open the main menu or close any open menus), and ESC to mean the keyboard button.

I rebinded Escape to spacebar, but decided I didn't like it and wanted to change it back to ESC. However I didn't realise that when I pressed ESC, it cancelled out of the rebinding mode and left the Escape function without a keybind. I'd already closed the menu at this point and couldn't reopen it to reload the game or exit properly (had to Alt-F4).

I fixed it by manually editing the keyBindings.json, but there should be some way to reset individual keybinds to default, or some way to bind a function to ESC if it's a valid keybind.