I also stumbled over this "feature": I edited one note and pressed "library" instead of the floppy, since there appeared some text, that said, it was autosaved

I also stumbled over this "feature": I edited one note and pressed "library" instead of the floppy, since there appeared some text, that said, it was autosaved .... But when I got to the library, the note was in the same condition as before the edit. So, according this test, "auto save" does not work (correctly) IMHO.