In DNFdragora there is no kodi-stable version 18.9, where only version 19.0 exists.
This version 19.0 is with plugin update problem and some codecs of kodi itself do not install.
Is there any possibility to fix this package so that this application will work normally again?
I cannot say why that is. You will have to ask the maintainer (if you cannot see the mailing list thread that I’ve linked to above too, since that should explain it). You can do this on the RPM Fusion mailing lists:
The version of kodi in rpmfusion is built with support for ffmpeg and this already includes many codecs.
So as I understand, you might not need theses additional codecs. (but I can be wrong).
More likely that theses additional plugins are not yet compatible with kodi 19 which hit RC1 recently.
The reason is we have this pre-release version is because it allows using python3 whereas the kodi 18 still relies on python2 which lead to various issue and crashes on modern fedora.