The earlier beginning of the 
mark in EE may have resulted from the manuscript's inadequate reading. Both versions of the hairpin endings, however, are as we believe authentic and musically corresponding. They both lead to the longest and harmonically relevant chords of the RH phrase. For the main text we adopt the longer hairpins of GC (→GE), as they correspond with the RH marks (the last crescendo in bars 602-603). The second mark in FE should most certainly be understood as continuation of the first. Such a notation is common in Chopin's works.
Compare the passage in the sources»
category imprint: Differences between sources
issues: Hairpins denoting continuation
notation: Articulation, Accents, Hairpins