Sorry to hear that! Are you playing the game in fullscreen, and what browser are you using? I did notice that box changes size depending on the viewport. It should look like this: https://imgur.com/a/0VTsDyz
I updated the game so it keeps the size of the UI more consistent. In fullscreen mode, it still doesn't snap to the bottom of the screen, but it's smaller, so hopefully it will also fix the problem for you when not in fullscreen.
