It is difficult to state whether the notation of A is a result of a mistake or a kind of a compromise suggesting, on the one hand, a long fading out of this third and, on the other hand, a lack of need to actually sustain it with fingers (thanks to pedalling). In the main text we include later changes of GE1 (an added slur) and FE (the minim changed to a semibreve), both probably authentic.
In GE2 the minim third of flutes was placed after the trilled note of the piano, as if it were to be played only in the middle of the bar, which is certainly contrary to Chopin's intention.
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources
issues: GE revisions, Authentic corrections of FE
notation: Rhythm