In the sources there is no 
returning f on the 7th quaver in bar 105. Similarly, in bar 107 Chopin overlooked a before f1. Those patent mistakes were undiscovered both by the revisers of the editions (in total 7 proofreadings in 3 editions) and by Chopin himself, who had to look at those places at least once, when, proofreading FE1, he added slurs embracing the discussed notes in both bars.
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category imprint: Interpretations within context; Editorial revisions
issues: Omissions to cancel alteration, Errors of A, Errors repeated in GE, Errors repeated in FE, Errors repeated in EE
notation: Pitch