"Search and Launch" makes it sound like it was just the same as KRunner only with a button to open it from a panel. It should therefore behave exactly the same. It should use the same set of plugins that KRunner uses, and allows access to its configuration. Otherwise, it's just confusing because it's "almost, but not quite like KRunner". Reproducible: Always
Search applet, ie. Milou, not the "Search and Launch" thing Netbook used to have :)
(In reply to Kai Uwe Broulik from comment #1) > Search applet, ie. Milou, not the "Search and Launch" thing Netbook used to > have :) Yes, sorry, that was the subtitle. I meant "Search" = Milou.
I found the cause. KRunner RunnerManager opens the application config and reads the enabled categories from there. If run from KRunner it will be "krunnerrc" where also the enabled runners in the KCM are saved to. However, when adding the search applet it is part of plasmashell and searches for the categories in plasmashellrc where they obviously aren't and then it falls back to the default set which doesn't include calculator and such.
The Search Plasmoid still does not allow any configuration other than setting a shortcut.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/milou/-/merge_requests/9
Git commit 3d62efff0aa271aa31f45f7706784e55c436d938 by Alexander Lohnau. Committed on 02/08/2020 at 18:30. Pushed by alex into branch 'master'. Set krunnerrc config file for RunnerManager FIXED-IN: 5.20 M +1 -1 lib/runnerresultsmodel.cpp https://invent.kde.org/plasma/milou/commit/3d62efff0aa271aa31f45f7706784e55c436d938