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https://bugzilla.redhat.com/show_bug.cgi?id=461039
--- Comment #8 from Caius CHANCE cchance@redhat.com 2008-09-17 22:34:03 EDT --- Hi Pacho, thank you very much for your timely testing feedback.
Atm, all the Latin and frequently used characters have been reconfirmed by me, if they are holding hinting instructions. Afaik, they are all with original good hinting data.
When the font has problem, it might be more likely happens on specific codepoint (character) instead of whole line. In this case, rendering engine (xulrunner) might be struggling to create an underline of correct length when the mouse cursor hover on the link. I also found that in the wrong-sample screenshot the link texts are in bold. Because Liberation Fonts has font style (Bold, Italic, BI, Regular) in separated file, I would be even more believing that the link texts are re-rendered. Of course, I would not say that liberation-fonts has no effect on this problem.
I guess we could also notify this to xulrunner and epiphany upstreams about this issue, too. They may also be able to provide us valuable info.
Let's keep this bug opened at the moment.