In GC and FE1 there is no lowering g2 to g2. This obvious mistake was corrected in GE and FE2. The accidental present in EE seems to be an editorial revision.
Compare the passage in the sources »
category imprint: Differences between sources
issues: EE revisions, Errors in FE, GE revisions, Omission of current key accidentals, FE revisions, Errors of GC
notation: Pitch