After all these years I still don't know what the difference between KDE and Plasma is.
KDE
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.
Plasma 6 Bugs
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.
"KDE" is a community of volunteers that makes and distributes Free Software.
"KDE Software" is all the apps, frameworks and libraries the KDE community produces. The KDE Software includes something called "Plasma".
Plasma is a desktop environment for UNIX-like operating systems (e.g. Linux and BSDs) developed by the KDE community.
Hope that helps.