in 
Cresc. - - in AI is the original version, replaced in A with more precise indications. According to us, minor graphic differences in the notation of crescendos in A – both 
and cresc. – are of random nature and are not supposed to suggest any differences in the interpretation of these indications. The engraver of FE (→GE) considered such a characteristic for Chopin imposition of the sign and the cresc. indication as an unnecessary complication. In EE the range of the signs in these bars was homogenised.
Compare the passage in the sources»
category imprint: Differences between sources
issues: EE revisions, Inaccuracies in FE
notation: Articulation, Accents, Hairpins