The engraver of FE inserted only one slur for bars 52-53. It could have been caused by the fact that in A Chopin deleted the previously written R.H. in bar 53, at the same time leaving the original slurring. The slurs could have been misinterpreted as one long slur, as the ending of the first and a bold beginning of the second one are interconnected.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Errors in FE, Errors in EE, Errors in GE
notation: Slurs