Starting from 5.13 beta none of the application launchers display history of programs and files, or favorite programs. Everything is reset at logout. Subsequent upgrades to 5.13 stable, 5.13.1 or 5.13.2 did change anything. Please help me debug this.
I have found a solution: https://forum.manjaro.org/t/kde-can-t-add-favorites-to-app-starter-menu/33538/13 Please close if this is not a real bug.
Corrupt activities DB, most likely. *** This bug has been marked as a duplicate of bug 389441 ***