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b. 107-108

composition: Op. 21, Concerto in F minor, Mvt I

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In A (→GE1FEEE1EE2) there is neither a  returning ain bar 107 nor a cautionary  before ein bar 108. In GE2 only the first was added and in EE3 – only the second.
In analogous bars 105-106, Chopin wrote in A both signs, which suggests that at the time of writing a repeating phrase, the composer's concentration broke (cf. bar 107). It increases the likelihood of oversights of ties at the end of bar 108.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Omissions to cancel alteration , GE revisions , Cautionary accidentals , Errors of A , Errors repeated in GE , Errors repeated in FE , Errors repeated in EE

b. 107

composition: Op. 21, Concerto in F minor, Mvt III

No mark in sources

[] suggested by the editors

Our alternative suggestion, [>]

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According to us, it is highly likely that the missing accent under is Chopin's neglect. Therefore, in the main text we suggest adding a respective sign after analogous bar 105. In the face of uncertainty as to the kind of the accent employed there, we also give an alternative proposal with a short accent.

category imprint: Editorial revisions

b. 107

composition: Op. 19, Bolero

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In GE, there is no cautionary  before a1. It was most probably added in the last phase of proofreading of FE (→EE). Similarly, in bar 219.

category imprint: Differences between sources

issues: FE revisions

b. 107

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

Slur in Atut (literal reading→FEEE)

Slur in Atut (contextual interpretation) & GE

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When interpreted literally, the slur of Atut begins from the 2nd third in bar 107, which was repeated in FE (→EE). In turn, in GE, the beginning of the slur was moved to the beginning of the bar. The fact of beginning the slur from the 1st third, obvious from the point of view of slurring, may also be, to a certain extent, graphically justified – the slurs in bars 104 and 105, unquestionable due to the context, also begin far from the notes they apply to. 

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccurate slurs in A , GE revisions

b. 107

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

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In the sources, the sharps are placed also before f1 and f2

category imprint: Editorial revisions

issues: Cautionary accidentals , Last key signature sign