The slur in A, which initially reached the 5th quaver in the bar, was shortened by Chopin by one quaver. That correction was not taken into account both by Fontana and the engraver of FE – in FC and FE the slur encompasses the entire bar.
Compare the passage in the sources »
category imprint: Differences between sources; Corrections & alterations
issues: Inaccuracies in FE, Corrections in A, Inaccuracies in FC
notation: Slurs