sarbian, What is your UI scale set to? Can you show me screenshots of the text. Also try reseting your options just to be sure.
I just tried with an "out of the box" setup (renamed my WTF directory, disabled all addon but SCT). So UI Scale is 1.
A few test later I found that it s a matter of screen resolution :
* At 1024x768 the font gow up to size 32.
* At 1280x1024 the font does not grow bigger than size 26.
* At 1920x1200 it does not grow bigger than 24.