In A Chopin put a 
only to the 4th quaver (g
2), considering an analogous alteration in the 4th triplet (g3) to be obvious. In FE (→EE1) there are no accidentals in the R.H. part, which must be a mistake. The correct notation with two flats is present in GE and – most probably on the basis thereof – in EE2.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: EE revisions, Errors in FE, Accidentals in different octaves, GE revisions, Inaccuracies in A
notation: Pitch