Seems to ignore the font size and just uses the smallest possible. Windows x86-64
EDIT: That should be 2015-04-22 Testing too many builds…
Since no one has bothered answering this, the font size thing is now intended behavior.
To increase the fontsize, open up your retroarch.cfg, search for dpi in your editor. Change “dpi_override_enable” to true and increase “dpi_override_value” to whatever you see fit to use. I use 152 personally.