There's legacy code in FontHarfBuzz.cpp that unnecessarily truncates the argument to an integer, that's not necessary any more since the signature of the called function had been changed a while ago.
Created attachment 186367 [details] Patch
Is this affecting SVG at all (as per the comment)?
Created attachment 186407 [details] Selection inaccuracy with viewbox scaling (In reply to comment #2) > Is this affecting SVG at all (as per the comment)? I think so - if you look at the attached test case you see that text selection is broken/inaccurate in the first inline svg image which uses 100x viewport scaling. My patch is not the full solution to this issue. I found this while experimenting to find a test case. But it will probably be a necessary step to solve this completely.
Comment on attachment 186367 [details] Patch Clearing flags on attachment: 186367 Committed r141778: <http://trac.webkit.org/changeset/141778>
All reviewed patches have been landed. Closing bug.