The long accents, written in A in bars 47 and 49, were reproduced in FE (→GE) as short. It is certainly a result of misunderstanding of Chopin's notation. However, it is difficult to determine what made the engraver or reviser of EE use marks resembling long accents, contrary to the base text.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Long accents, EE revisions, Inaccuracies in FE
notation: Articulation, Accents, Hairpins