Issues : Omission of current key accidentals

b. 36-37

composition: Op. 26 No 1, Polonaise in C♯ minor

..

In bar 36 in A there are no accidentals, which is certainly Chopin's mistake – cf. analogous bar 11. The necessary accidentals were added in the proofreading of FE (→GE,EE), together with the cautionary sharps in bar 37. 

category imprint: Interpretations within context; Differences between sources

issues: Cautionary accidentals , Omission of current key accidentals , Errors of A , Authentic corrections of FE