SUMMARY After every Plasma update the toolbar configuration is lost in Okular STEPS TO REPRODUCE 1. Update Plasma OBSERVED RESULT After updating Plasma from one version to the next the toolbar goes back to the original configuration, buttons, positions, icons ... It's happened at least with Plasma 5.15.1 to .2, .3, .4 & .5 EXPECTED RESULT The toolbar should keep the changes made by the user. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Manjaro KDE KDE Plasma Version: 5.15.5
This seems impossible, or at least something must be very wrong. Plasma updates shouldn't touch app configurations.
The place for toolbar configuration is (likely) ~/.local/share/kxmlgui5/okular/shell.rc on your system. Seems that file got modified or deleted during package update. Distribution packages do have the power to modify config files during update. But as Nate said, it would be odd in your case, because Plasma and Okular live independently. I.e. Plasma update shouldn't touch Okular. If you installed the update from Manjaro repositories, you should probably file a bug report to Manjaro.
Right, sounds like a packaging issue. Please to report to the Manjaro folks. Thanks!
I will report it in the Manjaro website. Thanks a lot!