I agree the undo is sometimes a bit weird, as is the “repeat last command”. However, the rest of it is so nice that I keep Helix as my main editor.

How did you lose work, though, could you not redo?

I think I panicked at the amount it has undone and then in my attempt to redo, made a change and got myself into a mess with the history. It was quite early on in my time with it.