For Fedora 36+, we want to switch to using GNOME's upstream "dark / light" mechanism for backgrounds - where you can basically specify a dark background image, and a light background image, and if you use the 'light in the day, dark at night' theme GNOME will transition between the two for you - rather than using the older "ship an XML file defining an animated transition between two images" mechanism.

The update that makes this change is in updates-testing already, but I'm filing a bug to propose it as an FE for Beta. It's not a huge deal, but since Beta's slipped again it seems worth getting it in. This setting is written to a user's profile when the user account is created and not updated after that, so right now everyone who installs F36 is getting the 'animated XML' setting, not the 'dark/light image' setting, and it won't be changed on subsequent updates even when the newer package is installed.