All unfocused windows lost from the session state after closing Ephy
I'm using epiphany 3.31.2-11-g474e55d7 with WebKitGtk+ 2.22.3 from gnome-nightly's flatpak, although it has been happening already for some previous versions.
I have several Ephy windows with several tabs opened on each window.
If I close Ephy completely (GNOME-Shell app menu -> Quit) and open again, only the last focused window is restored. The rest of the windows are lost.