Lawnchair 12.1.0 Alpha 3 is now available. We released version 12.1.0 Alpha 2 earlier today, but we unpublished it shortly after due to a critical bug that affected it.
Compared to version 12.1.0 Alpha 1, Lawnchair 12.1.0 Alpha 3 introduces backup functionality and resolves an issue where, on devices with Spanish set as the system display language, Lawnchair would crash on being opened.