Comment 9 for bug 1379375

I could be wrong, but it seems to me that bug 1317599 was originally filed about a document that is typeset predominately in Times/Times-Roman. After that bug was fixed by modifying fontconfig, this bug remained for documents typeset in Helvetica. See also comment #3 in this bug. The poppler patch described in comment's #5 and #6 of this bug will fix both issues.

As a result of a fixed version of poppler being available, there are comments in an upstream bug report to revert the changes in fontconfig to avoid side-effects in LaTex and other programs using the TeX Gyre fonts.