Both the omission of the 
sign in FE and its slight extension in GC (→GE) are undoubtedly of an accidental nature. However, the shorter hairpins in EE may be a result of the interpretation of the notation of A – Chopin would extend the initially written long accent and the result of these corrections is not entirely clear, as a part of the sign in bar 41 has the form of a single horizontal line.
Compare the passage in the sources »
category imprint: Graphic ambiguousness; Differences between sources
issues: Errors in FE, Corrections in A, Errors resulting from corrections, EE inaccuracies, Inaccuracies in GC
notation: Articulation, Accents, Hairpins