As was the case with d/d
in bars 58-60, 62 and 63, the version of FE1 with A on the last quaver in the bar is almost certainly erroneous. Chopin did not include in the notation the necessary 
after the change of the key signature in bar 33, which is proven by the compliance of the versions (written down differently) of AI and FE2 (→EE), which was proofread by Chopin. The version of FE1 was repeated in GE1 (→GE2), while the added in GE3 was most probably drawn from FE2.
Compare the passage in the sources»
category imprint: Differences between sources
issues: Errors in FE, GE revisions, Omission of current key accidentals, Authentic corrections of FE
notation: Pitch