SUMMARY STEPS TO REPRODUCE 1. Open a PDF with okular like this one http://amini.gsucreate.org/Security20.pdf 2. Add a popup annotation (any annotation works) 3. Try to click a citation number, e.g., [21], in blue color. OBSERVED RESULT The cursor does not change shape. Cannot click the citation number. EXPECTED RESULT The cursor should change to the shape of a hand with a finger pointing at the citation link. Click it will take you to reference section. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Okular 1.3.3 ADDITIONAL INFORMATION Change page size solves the problem temporarily. But adding annotation again causes the problem again.
Linux version is Ubuntu 18.04.
Works fine for me, your version is quite old. Any chance you can try a newer one? If you have flatpak support in your distro maybe try installing and running https://flathub.org/apps/details/org.kde.okular ?
Yes. It problem does not exist in Okular 1.10.3 version. I did not realize I was using a very old version.