The missing hairpin is certainly a mistake of the engraver of GE1, who perhaps omitted the sign, not knowing where to put it (it is practically impossible to convey the notation of A in print). According to us, the following misunderstanding also cannot be excluded: the engraver interpreted the bottom, clearer arm of the hairpin as a slur.
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category imprint: Differences between sources
issues: Errors in GE, GE revisions
notation: Articulation, Accents, Hairpins