The change of the font of accents is a characteristic inaccuracy of first editions. In this case, it is the correct interpretation of Chopin's intention in GE1 that is more puzzling, since the first two signs in A are clearly longer than the remaining two and one could expect they would have been reproduced as a 
hairpin. Cf. bar 100.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Long accents, Inaccuracies in FE, GE revisions
notation: Articulation, Accents, Hairpins