gtk_window_set_child() is not supported for AdwWindow
Installed: hydrapaper-1:3.1.0-2.fc35.noarch libadwaita-1.0.0-0.5.alpha.3.fc35.x86_64
(org.gabmus.hydrapaper:29282): Adwaita-WARNING **: 23:38:38.501: Using GtkSettings:gtk-application-prefer-dark-theme with libadwaita is unsupported. Please use AdwStyleManager:color-scheme instead.
(org.gabmus.hydrapaper:29282): Adwaita-ERROR **: 23:38:38.514: gtk_window_set_child() is not supported for AdwWindow
Trace/breakpoint trap (core dumped)