Enabling/disabling software sources cause their full repo names to disappear
Fedora 39, gnome-software-45.1-1.fc39.x86_64.
Enabling or disabling a software source in the Software Repositories dialog causes the software repositories cache to refresh and repo names (labels) to disappear. See the following screencast:
It gets fixed after closing and re-opening the dialog window.
Here is a full verbose gnome-software log.