KDE is an international technology team creating user-friendly free and open source software for desktop and portable computing. KDE’s software runs on GNU/Linux, BSD and other operating systems, including Windows.
If you encounter a bug, proceed to https://bugs.kde.org/, check whether it has been reported.
If it hasn't, report it yourself.
PLEASE THINK CAREFULLY BEFORE POSTING HERE.
Developers do not look for reports on social media, so they will not see it and all it does is clutter up the feed.
KUnifiedPush: KDE's efficient way of delivering notifications to your apps
KUnifiedPush, KDE's client library for the UnifiedPush protocol, has reached version 1.0.0. KUnifiedPush provides a way to deliver notifications instantly to multiple apps on your devices even if the apps are not running.
Ideal for social media, weather and instant messaging apps, it will also contribute to improving the battery life on your mobile devices.
Can this be self-hosted, so you're not sending data to a third party service?
yes https://unifiedpush.org/users/distributors/#self-host-the-server-difficult