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Source:
p. 5, b. 74-90
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In A, Chopin overlooked the flats lowering a to a
in b. 85 and 89 and the 
lowering a1 to a1 in b. 89. The inaccurate notation was repeated unchanged by FE (→EE1), while in b. 85 also by EE2. The versions of the remaining editions are correct (GE and EE3).
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources
issues: EE revisions, GE revisions, Omission of current key accidentals, Inaccuracies in A, Errors repeated in FE, Errors repeated in EE
notation: Pitch
Missing markers on sources:
A, FE1, FE2, FED, GE1, GE2, GE3, GE4, GE1a, EE1, EE2, EE3