The short accent in A was reproduced in GE1 as a long one, since the engravers were probably convinced that they were a diminuendo hairpin. This is how it was interpreted in FE (→EE), extending the mark to the end of the triplet, "for clarity." The form of the sign compliant with A was restored in GE2.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Long accents, Inaccuracies in GE, Inaccuracies in FE, GE revisions
notation: Articulation, Accents, Hairpins