The traces of corrections, visible in FE, allow to conclude that b1 as the inner note of the 1st chord in the L.H. was originally in FE1, from which it was passed to GE. In FE (→EE) the note was corrected in the last proofreading to g1, compliant with the notation of A.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Errors in FE, Terzverschreibung error, Authentic corrections of FE
notation: Pitch