@povoq You can unofficially dual boot A/B devices if you have UT installed on one slot and any other OS installed on another slot. You can switch slots easily using bootclt commands or use a GUI app like https://open-store.io/app/switch-my-slot.shouko to do that.

@jan-ops79 Try switching to devel update channel and see if it works, if it does not please let me know.