Drawing issue when setting the countdown timer too high

[abegel]

When you pass a large number (say, 9999999999) to the "start countdown" block, when it draws on screen you see "21935:33" where the time is supposed to be drawn in pink text in a white box. However, the ":33" part of the time is being drawn past the right edge of the white box. The white box only covers the first five characters of the time.