Before the 8th quaver in GC (→GE) and FE there are no accidentals: either a 
restoring A
or a 
raising a to a. The first possibility – oversight of the cancellation of the sign – seems to be more likely than an oversight of an alteration (Chopin did not forget to, e.g., write flats before c and c1 on the 10th quaver). EE includes naturals here, which in this situation do not have to, however, come from Chopin, as the incompatibility of the parts of both hands required an editorial intervention, even if Chopin did not pay attention to it (the absence of a respective intervention in GE is surprising).
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources
issues: EE revisions
notation: Pitch