It is not just Okular, al Qt based applications fail to offer anything but print to file option, so probably an issue with Qt5 (and 6)-base being rebuild on new openssl, before cups was rebuild.
Yup, that was it, rebuild qt5-base fixes the issue. Thanks for reporting.
Rebuild will move shortly, in the meantime, get it with:
sudo pacman -U http://kaosx.tk/repo/build/qt5-base-5.15.8-5-x86_64.pkg.tar.zst