Fractional scaling for wayland is broken on a per app basis which feels strictly worse to me than it was before. Libre office currently is broken on wayland and works in x11
Libreoffice includes support for gtk3, gtk4, Qt6, and other backends: https://github.com/LibreOffice/core/blob/master/vcl/README.m...
Maybe you need to try wayland with an alternative backend?
And this is the inherent problem with Wayland. Now we have to deal with a combinatorial explosion of things to try to get something that "just works."
People keep pushing KDE+Wayland to beginners either through recommendations or preconfigured stuff like bazzite. My experience is that the defaults in such a setup are broken and frustrating.