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.
ArchLinux and KDE are all rollingly updated to the latest version; black and white flashing dots will occasionally appear in the place where the mouse moves. This problem only occurs in wayland and does not exist in x11.
Looks like a bug. If you can generate this behaviour consistently, would suggest reporting it at