The versions of Af and A, identical in terms of the way they sound, differ only in additions – an indication specifying the instrumental group in Af and a 
in A. As was the case with the previous such insert between bars 261-262, this replica was left out by GE (→FESB,EE1→EE2). In this case, however, it is difficult to indicate the probable cause of why this edition diverts from the basis. The fact that this insert was restored to FE in the initial version proves that Chopin hesitated whether to recall a chord being the basis of the first three beats of the bar at the expense of blurring the shape of the solo part.
Compare the passage in the sources»
category imprint: Differences between sources; Corrections & alterations
issues: Chopin's hesitations, Errors in GE, Accompaniment changes, Authentic corrections of FE
notation: Pitch