The slur of GC in bar 55 begins just after the 1st crotchet, hence beginning the slur in GE from this crotchet is not surprising. However, in bar 56 the slur of GC, corrected by Chopin, starts undoubtedly from the 2nd quaver, which was, however, ignored in GE. Both FE and EE show that in both bars the slur should certainly begin from the 2nd crotchet.
Compare the passage in the sources »
category imprint: Graphic ambiguousness; Differences between sources
issues: GE revisions, Inaccuracies in GC
notation: Slurs