Issues : Errors repeated in GE

b. 27

composition: Op. 28 No. 22, Prelude in G minor

..

A (→FE,FCGE) has no  lowering a1 to a1, as in b. 19 (in the manuscripts the discussed bar is only marked as its repetition). The obvious inaccuracy was spotted only in EE.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Omission of current key accidentals , Errors repeated in GE , Errors repeated in FE

b. 28

composition: Op. 28 No. 21, Prelude in B♭ major

..

In the sources there is no  lowering d1 to d1. Chopin's attention was caught by the beginning of the bar – he removed g1 from the 1st quaver; he also crossed out the second one and rewrote it next to it. 

category imprint: Interpretations within context; Editorial revisions

issues: Omission of current key accidentals , Inaccuracies in A , Errors repeated in GE , Errors repeated in FE , Errors repeated in EE

b. 30

composition: Op. 2, Variations, complete

..

In A a few necessary or cautionary accidentals are missing – in the L.H. a  lowering g1 to g1, in the R.H. flats lowering g2 to g2 and c2 to c2 and a  to f2. In GE (→FE,EE) it was only the missing accidental in the L.H. that was added.
In the main text we add the above accidentals as well as a cautionary  to d3.

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: Accidentals in different octaves , GE revisions , Inaccuracies in A , Errors repeated in GE , Errors repeated in FE , Errors repeated in EE

b. 32

composition: Op. 28 No. 19, Prelude in E♭ major

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A and the remaining sources lack the  restoring a2. In the main text we add a cautionary  before d3.

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: Omissions to cancel alteration , Errors repeated in GE , Errors repeated in FE , Errors repeated in EE

b. 33

composition: Op. 11, Concerto in E minor, Mvt III

..

In FE (→GE1GE2), the slur in the R.H., which started in bar 32, does not have an ending here, i.e. on a new line. The defect was corrected in EE and GE3.

category imprint: Interpretations within context; Differences between sources

issues: Inaccuracies in FE , Uncertain slur continuation , Errors repeated in GE