The steps described in #4 did not work for me. I managed to fix it by running qt5ct and selecting "Oxygen" as icon theme there. Rem: I also have QT_QPA_PLATFORMTHEME="qt5ct" in my env.
See https://bbs.archlinux.org/viewtopic.php?id=220907 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1698656 Title: navigation panel icons missing on standard install of 17.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/okular/+bug/1698656/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs