1 & f
The version of A may be the inadvertently left original edition of this bar (or maybe even of bar 7). In any case, a proofreading of FE – despite a possible error in the 2nd half of the bar – does not leave any doubts concerning the final intention of the composer. The natural returning f, which in FE is only before the penultimate note of the bar, was moved before the 7th semiquaver in GE and EE, which may render Chopin's intention accurately.
Compare the passage in the sources»
category imprint: Differences between sources
issues: EE revisions, Errors in FE, GE revisions, Errors of A, Authentic corrections of FE
notation: Pitch