I started up osu!test to see the new welcome animation, and noticed that when you switch resolutions the "You are using the test build but are not a supporter." message doesn't fill the screen (when switching up to higher resolutions) or goes off the screen (when switching down to smaller resolutions).
Tested with switching between windowed 800x600 and fullscreen 1280x800.
osu! version: 20140629.5test
Tested with switching between windowed 800x600 and fullscreen 1280x800.
osu! version: 20140629.5test