In A, Chopin wrote the final section of figuration in this phrase (from e
2), as if he thought the majority of the previously introduced accidentals to be still valid – he put flats only before the 3rd and 7th quavers in bar 436. In the latter, signs were added in GE (→FE→EE), yet the 
at the end of the previous bar – only in EE.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: EE revisions, GE revisions, Errors of A
notation: Pitch