running appimage gives nothing/no window

When running Electron.Fiddle-0.37.2-x64.AppImage, from a terminal, no window is ever showing up, and I only got that message:

(process:76319): Gtk-ERROR **: 18:08:38.482: GTK 2/3 symbols detected. Using GTK 2/3 and GTK 4 in the same process is not supported

on archlinux/gnome shell/wayland/kernel 6.17.1