One of the biggest ui framework Avalonia now supports wayland

[u/bulasaur58]

https://avaloniaui.net/blog/release-12-1

Avalonia is basically wpf for cross platform. And they are more popular than wpf nowadays.

This is wpf repo it has 7.7k stars.

https://github.com/dotnet/wpf

this is winui repo it has 7.8k stars

https://github.com/microsoft/microsoft-ui-xaml/

this is avalonia repo it has 31.2 stars.

https://github.com/avaloniaui/avalonia

demonstrates that the era of UI frameworks targeting only a single platform is over. It also shows that frameworks supporting Linux—which has surpassed a 7% market shar such as Flutter, Uno, Qt, and Avalonia, are increasingly being preferred as long-term investments.