I have found a solution for this issue.
The problem basically is with the behavior of the font line-height.
Resolving this issues requires modifying the font Vertical Metrics.
Anyway here is what you need to do:
- Go to http://www.fontsquirrel.com/tools/webfont-generator ;
- Add the font you want to use;
- Select “EXPERT…”
- In Font Formats select EOT Lite if you require IE support;
- In Rendering section, check “Fix Vertical Metrics” (!important);
- Agreement: — Agree :)
Use the generated font-kit and and enjoy life.
This tool basically gets the font Vertical Metrics straight, which is the actual issue.