In FE1 (→EE), the inner note of the chord erroneously has the value of a dotted whole note [semibreve]. This is doubtless the mistake of the engraver, who omitted the note stem (it is worth while noting that heads of minims and semibreves look the same in FE). In FE2, instead of adding the stem, the reviser removed the dot; that version, while definitely inauthentic, is nonetheless correct from the formal point of view and indistinguishable from Chopin's intended version when it is being played. In GE the note is a dotted minim, which definitely reflects the notation of both autographs.
Compare the passage in the sources »
category imprint: Differences between sources; Source & stylistic information
issues: Errors in FE, FE revisions
notation: Rhythm