The notation of the octave a1-a2 in FE and GE is certainly inaccurate, which was corrected by the reviser of #EE. In that edition, however, one extending dot was added next to a1, which indicates a misunderstanding of Chopin's simplified notation, in which the progression a1-g1 of the lower voice was not separated.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: EE revisions, Different values of chord components, Inaccuracies in GE, Inaccuracies in FE
notation: Rhythm