In A, the end of the slur was drawn inaccurately – 
. Leading the slur to the grace note is inadmissible in this context. If one were to take into account the extent of the L.H. slur, one could conclude that the R.H. slur does not go beyond bar 55 either. Still, it seems more probable that what Chopin had in mind was a slur similar to that from bars 6-8. This is how his intention was understood in GE (→FE→EE).
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category imprint: Graphic ambiguousness
issues: Inaccurate slurs in A
notation: Slurs