In A (→GE) and FE there are no flats to the 2nd quaver in each of these bars. Chopin's patent oversight – flats are written next to the g grace notes – went unnoticed by the revisers of GE and FE and by Chopin himself while he was proofreading FE1 and FE2.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: EE revisions, Accidentals in different octaves, Omission of current key accidentals, Errors of A, Errors repeated in GE, Errors repeated in FE
notation: Pitch