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b. 249-253

composition: (Op. 4), Sonata in C minor, Mvt IV

No marks in A

Long accents in GE

Short accents in GE, FE & IE

..

Generally speaking, the long accents added in GE are justified – Chopin indicated such a performance in the two preceding four-bar sections, as well as in bars 40-55. He used long, short and vertical accents and  marks (in various configurations). Due to the above, although the very accenting results from the preceding phrases, it is difficult to say which marks would be used here and next to which chords, hence in the main text we neither include the GE accents nor suggest our own ones.
In the remaining editions the GE accents were reproduced inaccurately, as short accents.

category imprint: Differences between sources

issues: Inaccuracies in FE , GE revisions , EE inaccuracies ,

b. 249-250

composition: (Op. 4), Sonata in C minor, Mvt IV

Continuous slur in A (→GEFE,EE)

Separate slurs in IE

..

The divided slurs in IE are probably an inaccuracy related to the transition to a new line.

category imprint: Differences between sources

issues:

b. 249-250

composition: (Op. 4), Sonata in C minor, Mvt IV

No fingering in A (→GEFE,IE)

Fingering in EE

..

In the main text, we do not include the inauthentic R.H. fingering added by EE.

category imprint: Differences between sources

issues: EE revisions

b. 250

composition: Op. 39, Scherzo in C♯ minor

Pedalling in EE & GC (→GE)

No markings in FE

..

Absence of the pedal mark in this bar in FE is definitely accidental – not only are such marks present in the other sources, but also FE itself has them in analogous bars 258 and 266.

category imprint: Differences between sources

b. 250

composition: Op. 39, Scherzo in C♯ minor

No sign in EE

Arpeggio in GC (→GE) & FE

..

Absence of the arpeggio mark in EE is probably an error, yet the possibility that it is the first (original) notation cannot be entirely ruled out. 

category imprint: Differences between sources

issues: Errors in EE