This topic is about the KDE integration and making sure that KDE applications have consistent looks with themes and fonts that match the system settings. This will ensure a smooth experience for users whereby all their KDE applications (including snaps) look and behave the same way.
Currently xdg-desktop-portal is not being SRU’d with snapd. This means that unless the latest release gets SRU’d to 18.04/16.04, the users on those systems will not benefit from the new Settings portal and not have applications as neatly integrated.
SRUing the portals I would imagine? The problem of getting theme-setttings-into-confinement is solved by the Settings portal, it’s just that Ubuntu LTS isn’t supporting the portal because that’d need the new release SRU’d.
Sorry, I sounded a bit stand-offish there without intending it. My point merely is that this is solved on a code-level but needs dealing with on an integration/distribution level now.
This probably also extends beyond Ubuntu even. It may be wise to ask other distributions as well to come up with a plan for xdg-desktop-portals to enable proper integration of snapped applications (or really any confined application) after their respective distro releases. I am not sure all big players have given the post-release “enablement” of portals enough thought yet.