A
compare
Lack of 
may be considered as a patent inaccuracy of AI, as in the next bar there is dim. in this manuscript, which is not in the final version. It may mean that at the stage of writing AI, Chopin had a slightly different dynamic concept of the ending, in which the final attenuation begins clearly later.
Compare the passage in the sources »
category imprint: Differences between sources; Corrections & alterations
notation: Verbal indications