Scrollbars visible in Firefox fullscreen mode

[johndiiorio]

User reports that "both scrollbars in fullscreen on FullHD display in last Firefox under Xubuntu."

There are also a number of UI bugs, including:

• The "Sign in" and "Reset Password" buttons overlap when the screen size shrinks.
• The lobby table glitches in Firefox
• The "empty" slots in the lobby pane could be a better color.