An arpeggio preceded by a grace note, resulting in a repetition of the bottom chord note, belongs to Chopin's favourite ornaments – cf. e.g. bars 18 and 320 or the Polonaise in F minor, Op. 44, bar 27 and analog. Therefore, it seems unlikely that the small slur added in FE2, reducing the ornament to a common arpeggio, could have been coming from Chopin. The absence of the small slur in EE suggests that the mark was added in the last stage of proofreading FE2.
Compare the passage in the sources »
category imprint: Differences between sources
issues: EE revisions
notation: Rhythm