Oooh crazy!

You didnt layer aurora on bazzite, you rebased.

This is very problematic and I didnt know this could happen. OCI images dont have a concept of "removing packages". Instead, they are always removed on the local system.

The firefox issue is uBlue people being weird. They remove it, preventing anyone from installing it. Instead you need to use the firefox tar archive from their website, works well too but is kinda random as you need to place it in some nonstandard folder.

Steam is interesting. Please report that. I am not sure how these things work but my theory is that the installer (anaconda) wrote the system to your PC with the default configuration (with steam).

Then you rebased to Aurora but the system was still originally Bazzite. Which is odd, ai thought there was no such state. Please report that to them!

My idea is to rebase to their main image and then back to aurora. This may remove this steam error. The main images also still have firefox and just the codecs etc added, so I can recommend them.

UBlue removed the instructions on how to do that from their website with the redesign.

Use the rebase command you used, but use ublue-os/kinoite-main:latest instead of ublue-os/aurora:latest in the rebase command.

Then rebase back to aurora after a reboot. But tbh I didnt like Aurora it is weird and kinda random. I like ujust and yafti though. I am on Fedora Kinoite with a huge set of layers. Works very fine too, still worlds faster than Windows updates LOL