the letters "ff" in "staff" are not displayed in Firefox

Question

I am observing a weird behavior in Firefox. I have a sub-nav menu item labelled 'Faculty and Staff'. Somehow Firefox(latest-always updated) is eating up the 'ff' in staff. The html source looks fine(even in firebug). The menu-item displays correctly in chrome though. Do we have any idea about this issue? or should i log a bug with firefox?

Screenshot:

http://www.freeimagehosting.net/newuploads/bf945.png

Answer 1

Are you sure it really is two f's?

My guess is that your authoring application transformed the ff into the 'ff' ligature, which your specific font does not have a glyph for.

See here:

ff vs. ff

You could test this, by going into your source and trying to select only 1 of the two f's. If you can only select them both at the same time, it's a single character and thus the ligature.