In the passages including a few octaves, there are no accidentals in the sources, which, however, does not raise doubts concerning the text intended by Chopin.
In GC there are no sharps needed in the notation of f
1, f2 in bar 27, f, f1, f2 in bar 28, f2, f1 (L.H.), c1 in bar 29 and f, d2 in bar 30.
In FE the same signs apart from the sharps before f1 in bar 27 and f1 (L.H.) in bar 29 were omitted; moreover, the 
raising d2 to d2 in bar 29 was overlooked.
GE1 completed the signs overlooked in GC except for the raising f1 to f1 in the L.H. in bar 29.
In the remaining editions – EE and GE2 (→GE3) – all necessary signs were added.
Compare the passage in the sources»
category imprint: Interpretations within context; Differences between sources
issues: EE revisions, Errors in FE, GE revisions, Omission of current key accidentals, Errors of GC
notation: Pitch