Comment 21 for bug 1325230

I have the same problem on Debian/Sid (unstable), which uses
libpoppler37. If I open mdmspe.pdf with Okular, Evince or GIMP then the
"fl" and "fi" ligatures are missing.

If I downgrade Okular to the version in Debian testing, which still uses
libpoppler19, then these ligatures are displayed correctly.

Both versions of Okular use the same font substitution scheme, identical
to the screenshot that Christopher attached to Comment 3. The ligatures
in texgyretermes-{roman,bold}.otf are displayed with libpoppler19 and
are missing with libpoppler37.

I hope this information helps to track down the source of the problem.