In bar 79 in Atut, Chopin wrote a 
only before the top note of the octave at the beginning of the bar, which was corrected already in FE (→GE,EE). In an analogous situation four bars later, there are no accidentals before the 1st octave in Atut, which was repeated in FE and corrected only just in GE and EE.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: EE revisions, Accidentals in different octaves, GE revisions, Omission of current key accidentals, Errors of A, FE revisions, Inaccuracies in A, Errors repeated in FE
notation: Pitch