Op. 2, Variations in B♭ major
Op. 10, 12 Etudes
Op. 11, Concerto in E minor
Op. 21, Concerto in F minor
Op. 22, Polonaise in E♭ major
Op. 24, 4 Mazurkas
Op. 25, 12 Etudes
Op. 26, 2 Polonaises
Op. 27, 2 Nocturnes
Op. 28, 24 Preludes
Op. 30, 4 Mazurkas
Op. 35, Sonata in B♭ minor
Op. 50, 3 Mazurkas
Op. 63, 3 Mazurkas
Op. 64, 3 Waltzes
Op. 22, Andante spianato
None of the sources features the 
lowering e2 to e
2 on the 8th semiquaver of the bar. In such situations, when an accidental has already appeared at the same pitch yet under an octave sign, both Chopin and his publishers would often consider it to be valid. The inaccuracy, certainly repeated after [A], does not result in any textual doubts and is indeed hardly noticeable.
Compare the passage in the sources »
category imprint: Interpretations within context
issues: Accidentals in different octaves, Inaccuracies in FE, Errors repeated in GE, Errors repeated in EE
notation: Pitch