The absence of the naturals raising g
(1) to g(1) is almost certainly a mistake of Chopin who partially corrected his error in the proofreading of FE3 by adding a 
on the 2nd crotchet in bar 228. In FE4 the second necessary was added, yet both signs are only in GE and EE2.
Compare the passage in the sources »
category imprint: Differences between sources
issues: EE revisions, Errors in FE, Errors in EE, GE revisions, Authentic corrections of FE, FE revisions
notation: Pitch