Chopin added the pedalling in a proofreading of FE. The 
mark, overlooked in bar 28, was added in GE3 (→GE4→GE5), yet too early, as it seems; the reviser probably did not notice that despite a different notation, the bass note remains unchanged during the entire bar. The addition we perform includes the authentic pedalling from the previous bar. See also bars 32-36.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: Errors in FE, GE revisions, Authentic corrections of FE, No pedal release mark
notation: Pedalling