New comment by oreo639 on void-packages repository

https://github.com/void-linux/void-packages/issues/49575#issuecomment-2024770422

Comment:
> Yes, ALL apps run in XWayland use SSDs.

That's just not true. A lot of X11 applications happen to use SSDs because that is what the developer chose to use, but that doesn't mean all X11 applications use SSDs and most gtk3 applications do not, even when running under X11. (Wayland applications can't on GNOME because GNOME explicitly does not support it)

In the case of deluge, it explicitly sets GTK_CSD to 0 (which disables CSDs on X11): https://github.com/deluge-torrent/deluge/blob/7f3f7f69ee78610e95bea07d99f699e9310c4e08/packaging/win/pyi_rth_gtk_csd.py#L3

Xfce4 applications also explicitly enable SSDs (they do it by setting `gtk_window_set_titlebar (window, NULL);`).

Ofc, gtk2 applications do always use SSDs and only support X11.