Similarly to the slur, the moment where the 
hairpin begins is not obvious in the manuscripts. We assume that the sign in A has the character of a long accent, and starts slightly before the a crotchet. However, the sign in GC starts after the minim at the beginning of the bar, as it was interpreted by GE which is based on this copy. The shortening of the hairpin in FE resulted most probably from the line-break, and the sign in EE was overlooked.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Inaccuracies in FE, Scope of dynamic hairpins, Errors in EE, Inaccuracies in GC
notation: Articulation, Accents, Hairpins