Ah, didn't notice that. I'm not super familiar with Bazzite but it essentially has two versions of the operating system. Updates are written to wherever you currently are not. That way if something broke with the system you could go back to the working version.

No idea how you can find out which the "current" version is supposed to be. Probably still the first one in the list. Either way it shouldn't matter so much because an update and a reboot should put you into the right one.