In GC (→GE) Chopin added cautionary naturals next to b2 in the R.H. and b in the L.H. Such a double addition virtually excludes the possibility of a mistake – it is about neither restoring d2 in the R.H. nor a cautionary 
before the L.H. g1. The composer presumably forgot that a 
from the key signature is no longer effective. In the main text we omit these accidentals, adding a cautionary before g1 instead.
Compare the passage in the sources »
category imprint: Differences between sources; Editorial revisions; Corrections & alterations
issues: Errors resulting from corrections, Authentic corrections of FE
notation: Pitch