In Ap the last chords in the R.H. in bars 20 and 22 are crotchets, which creates a kind of rhythmic and articulation accent. The similarity with the original rhythmic value of the chord in bar 22 is coincidental, as in the original version there are no differing values in the bar. In the version for publication Chopin significantly reduced the number of this kind of differences in the part of the L.H. (not to mention the lower voice of the R.H.).
Compare the passage in the sources »
category imprint: Differences between sources
issues: Accompaniment changes, Authentic corrections of FE
notation: Rhythm