Relevant aside: while the Ryujinx Avalonia UI has more features and is generally nicer, due to a small number of outstanding issues, Ryujinx uses an older GTK+ UI in its default builds.

Avalonia builds are, however, readily available with each release, and auto-update just like standard GTK+ builds.

See the project FAQ[1] for full details.

[1] https://github.com/Ryujinx/Ryujinx/wiki/FAQ-and-Troubleshoot...