There seems to be a regression bug exactly as described in the currently fully patched ubuntu 16.04.
I found this problem recently with a pdf prepared by origin on windows. The file contains mu characters. I came accross this bug report, and the datasheet posted by the OP, on page 6, lower right, shows missing characters in Okular 0.24.2 with PDF Backend 0.6.5. (I am attaching no images, one by okular and one by Firefox). Evince also renders wrongly. libpoppler is 0.41.0-0ubuntu1.1. ** Attachment added: "Correctly rendered in Firefox" https://bugs.launchpad.net/ubuntu/+source/poppler/+bug/518236/+attachment/4863407/+files/renderFirefox.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/518236 Title: Evince/Okular displays incorrect characters To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/poppler/+bug/518236/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs