The version of FE1 is almost certainly a mistake by Chopin, which is proven by the compliant version of AI and FE2 (→EE), proofread by Chopin. The mistake was most probably caused by the fact that in [A] the notation with a 5-sharp key signature (as in AI) was replaced with the notation with a 3-sharp key signature. In the discussed four-bar section, kept in the key of C major, it was necessary to add sharps to d and a notes, which Chopin apparently did not do, since these are the accidentals that are missing in FE1 (see also the last note in the next bar).
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category imprint: Differences between sources; Editorial revisions
issues: Errors in FE, Errors resulting from corrections, GE revisions, Omission of current key accidentals, Authentic corrections of FE
notation: Pitch