The bad thing is that I really need to control position and stacking of the Windows, so after your explanation I can’t use Wayland, unless using the X11 API and the compatibility layer.
I’m experimenting/developing a new native backend for JavaFx (https://openjfx.io/). The idea was to use Gtk4 (mainly Gdk), as it would already do the work abstracting X11, Wayland (as initially thought). But JavaFx would need to move, resize a stack windows to provide the same behavior between platforms.
Not criticizing Wayland, but not having those windowing functionality, it’s a no-go for JavaFx.
Thanks.