I recommend you try a live dvd with plasma 6 and check for yourself. I think kde neon should have it.
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.
Thanks, I had tried with a live system that uses a Wayland session and couldn't do it, and didn't know what live system uses Plasma 6 with X11.
I just want my kde windows to not freeze and get stuck every 3rd time I resize them unless I grab the top edge and slide it a bit first.