The version of FE is earlier – in GC one can see a correction, in which a
was deleted, while d1 probably added. A similar change might have been introduced to the base text to EE. According to us, both versions are stylistically more or less equal, and ten years later Chopin did not see a reason to change the original version in pupil's copies.
Compare the passage in the sources »
category imprint: Differences between sources; Corrections & alterations
issues: Accompaniment changes, Authentic corrections in GC
notation: Pitch