The flats restoring e
at the beginning of the 2nd half of the bar are missing in both bars in A (→GE). The mistake was corrected in FE (→EE), probably at Chopin's demand. Similarly in analogous bars 319-320.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: Omissions to cancel alteration, Errors in GE, Errors of A, Authentic corrections of FE
notation: Pitch