These issues go back a very long ways. Why has the import of fonts never been fixed? Letters are not the same sizes are that others - italic and script fonts are cut off.
Almost every font I loaded, including Arial and Calibi, had problems. How much more basic can you get than that? Doesn't portend well to seeing any future updates, let alone major bugs being fixed.
It appears as if VS is reading the X-height and/or the Cap Height of the font and scaling all the letters to fill within that space. However most font designers with make some of the lowercase letters slightly taller than the X-height and even the cap height (i.e. lowercase L in Calibri). Most script fonts has characters which hang considerably over the bearing edge. It's not so much kerning which is the issue but that VS cuts off characters at the bearing edges. It needs to simple pulling the entire glyph, but I'm assuming it internal font structure does not support this - which is why we see the errors in fonts we do.
Thanks for your insights into this issue, I will relay this to our development team.