In A (→GE→EE1,IE) there is no accidental to the bottom note of the 1st third in the 2nd half of the bar, which results in e
2. What is more, 2 quavers later we see a 
to e2, which seems to confirm e2 in this place. Nevertheless, the L.H. chord featuring e1 as the topmost note, played simultaneously, points to Chopin's patent mistake. It was noticed and corrected only in FE and EE2. Incidentally, a similar situation in A in analogous bar 126 was corrected already in GE.
In the main text we add a necessary to the 5th quaver and omit the accidental to the 7th quaver, which is no longer necessary in this context.
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources
issues: Omission of current key accidentals, Errors of A, FE revisions, Errors repeated in GE, Errors repeated in EE
notation: Pitch