Reboot is needed to find Flathub apps after installing flathub.flatpakrepo

How to reproduce:

1. Install latest Fedora with all the updates, reboot
2. Install https://dl.flathub.org/repo/flathub.flatpakrepo
3. Open Activities/Software and type any Flathub app name
4. Nothing is found
5. Reboot
6. Open Activities/Software and type any Flathub app name
7. The app is found

Could you please somehow refresh search engine to start searching for Flathub apps immediately after installing the flathub.flatpakrepo file or introduce a new simpler approach to enable Flathub?