The chromatic notation of A is inaccurate in a peculiar way – Chopin overlooked the 
to the bottom note of the 1st octave in b. 228 (B1) and the accidentals to the bottom notes of the sixths on the 4th quaver in both bars (a
2 and f
2, respectively). It is also noteworthy that there is a cautionary to f2, but not a quaver earlier to f1. FE added only a to B1.
GE and EE added the remaining necessary accidentals to the version of FE, while GE also added cautionary naturals to f1 and f3. The former was also added by EE2 (→EE3), which results in a version adopted to the main text.
See also the notes in the next bar.
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources
issues: EE revisions, Accidentals in different octaves, GE revisions, FE revisions, Last key signature sign, Inaccuracies in A, Errors repeated in FE
notation: Pitch