Font selection is broken on Windows 7. I can only select the font family (e.g. Source Code Pro) and not a specific type (like Source Code Pro Light). In the latter case it switches to something like Arial or Helvetica… This bug was introduced lately (it worked in 3032 and/or 3035).
And OTF Fonts are not displayed correctly. You can try the free Source Code Pro font which is distributed as OTF and TTF. The TTF version is good while the OTF is ugly (too bold and strange scaling). I have seen this issue before in 3032 and 3035.