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b. 211

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

..

In FE (→EE1), there is no  lowering d​​​​​​​2 to d2. The accidental was added in GE and EE2 (→EE3).

category imprint: Interpretations within context; Differences between sources

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

b. 211-212

composition: Op. 31, Scherzo in B♭ minor

c2 repeated in A (→FCGE1)

c2 tied in FE (→EE)

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The missing tie of c2 is probably an oversight of Chopin in A (→FCGE1) – those are the last bars on the page, which favours distraction. The tie was added by Chopin in the proofreading of FE (→EE) as well as in GE2 (→GE3), probably on the basis of analogy with b. 79-80.
There is a similar situation in b. 662-663. 

category imprint: Differences between sources; Corrections & alterations

issues: GE revisions , Errors of A , Authentic corrections of FE

b. 211-212

composition: Op. 35, Sonata in B♭ minor, Mvt I

 in bar 211 in GC (→GE)

No sign in FE (→EE)

 in bar 212 suggested by the editors

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The placing of the  sign (diminuendo/long accent) at the end of bar 211 in GC (→GE) is certainly a mistake – cf. bars 212-213, and an inaccurate slurring, e.g. in bars 212-214. We consider the omission of the sign in FE (→EE) to be an error as well. In the main text we shift the sign written in GC to the beginning of bar 212, accordingly with the analogous motives.

category imprint: Differences between sources; Editorial revisions

issues: Errors in FE , Inaccuracies in GE , Inaccuracies in GC

b. 211-222

composition: Op. 2, Variations, complete

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In the main text we add cautionary flats to e1 in bars 211, 214, 219 and 222 (in the latter also in an alternative version, to the 5th semiquaver).

category imprint: Editorial revisions

b. 211

composition: Op. 12, Variations in B♭ major

..

In FE the  raising f1 to f1 was omitted here. This patent mistake – see the R.H. part – was corrected both in GE and EE.

category imprint: Interpretations within context; Differences between sources

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