Software doesn't search & install required platform from a .flatpak file that was generated with --runtime-repo
Steps to reproduce
Create a flatpak bundle with --runtime-repo and then try to install it in a system withouth the runtime installed. GNOME Software doesn't search & install it.
Expected behaviour
Doing flatpak install in the CLI works properly and installs the necessary platform, adding the required repository.
Additional info
Steps can be found here for Nautilus, and the generated flatpak file can be found here.