Sorry for ignoring the form but this isn't so much of a bug as it seems to be a mistake or oversight.
You can scale sprite text in the properties bar, and in the actions, but you can't compare the scale of the sprite font, nor does scale appear here: <img src="http://puu.sh/3Uv3h.png" border="0" />
Changing width and height obviously don't work because it just changes the size of the box.