The version of EE was probably introduced to supplement the top voice rhythm, which Chopin would often ignore. Moreover, it contradicts the notation of A, in which there are no dots prolonging a
1, and it is likely that they were being removed. The notation of FCI also excludes a possible mistake by Chopin – it simply features one-part notation: c1-a1 crotchets and b quavers. Consequently, had Chopin (while writing A) wanted to introduce an effect of the E chords mingling delicately with the held a1 notes, he would have made a change the essence of which would be adding dots, which makes them being accidentally overlooked almost impossible.
Compare the passage in the sources »
category imprint: Differences between sources
issues: EE revisions
notation: Rhythm