Bug 429106

The libkf5completion5 package doesn't install the '/usr/lib/x86_64-linux-gnu/qt5/plugins/designer/kcompletion5widgets.so' plugin as it installed via the 'libkf5completion-dev' package. Normally this is not an issue as mostly it's not needed at runtime, but if an application uses the plugin via scripting (like the Kolab account wizard from the kdepim-runtime package does), then certain ui widgets (like KLineEdit) will be broken.

STEPS TO REPRODUCE
1. Install kmail without any development packages being installed (like on a fresh install)
2. Try to create a Kolab account by going through the account wizard


OBSERVED RESULT
On the dialog with the e-mail/password fields the KLineEdit and KPasswordLineEdit widgets are not shown, only the label next to them


EXPECTED RESULT
All of the widgets should be properly shown.

If you install the 'libkf5completion-dev' package (and its dependencies), then the widgets will be properly shown.  Obviously an application shouldn't depend on a development package, therefore the libkf5completion5 package should install the '/usr/lib/x86_64-linux-gnu/qt5/plugins/designer/kcompletion5widgets.so' file. It's possible that this is happening with other (which ship designer plugins) packages as well.


SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.20
KDE Plasma Version: 5.20.3
KDE Frameworks Version: 5.75.0
Qt Version: 5.15.1
Kernel Version: 5.4.0-52-generic
OS Type: 64-bit

ADDITIONAL INFORMATION
I was looking for the place where the packaging itself is maintained at places like https://invent.kde.org/neon/neon-packaging, but couldn't find it for libkf5completion. Is the package taken from Ubuntu (and in turn from Debian?). Anyhow, I'm more than happy to also send patch if I'm pinpointed to the right placel