The change of the rhythmic configuration in the 1st triplet performed in a proofreading of FE (→GE,EE) is an example of a characteristic rhythmic variant, frequently encountered in Chopin's works (cf. Scherzo in C minor, Op. 39, bar 47). The uniform spacing of notes and a small, clearly inserted rest show that initially Chopin wrote a plain semiquaver triplet there, the correction in FE being only the last stage of changes at this place.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Authentic corrections of FE, Inserted rest
notation: Rhythm