Lack of flats returning e
in the last chord in A (→FE→GE1,EE3) is certainly Chopin's oversight. The accidentals were added in FED and GE2 (→GE3→GE4) and EE4.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: Annotations in teaching copies, Annotations in FED, Omissions to cancel alteration, Errors of A
notation: Pitch