See summary. Trying to install from the Silverblue installer image in current Rawhide - e.g. https://kojipkgs.fedoraproject.org/compose/rawhide/Fedora-Rawhide-20191030.n.1/compose/Silverblue/x86_64/iso/Fedora-Silverblue-ostree-x86_64-Rawhide-20191030.n.1.iso , for yesterday's compose - fails during the install process with an error "The application org.gnome.Evince/x86_64/-stable requires the runtime org.fedoraproject.Platform/x86_64/f31 which was not found".
I believe https://pagure.io/pungi-fedora/pull-request/795 may solve this, not sure yet.
In 20191106.n.0 the Silverblue installer build failed entirely :/ not sure why: