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Rhythm

b. 618-619

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

a1 tied in FE (→GE,EE)

a1 repeated, our suggestion

..

The lack of autograph impedes the unravelling of the actual meaning of two ties present in FE (→GE,EE). In a similar melodic and rhythmic context, appearing in Chopin's pieces on a number of occasions, a note falling on a strong beat of bar is always played (repeated) – cf. e.g. bars 220-221 and 571-572 or 606-609. Therefore, it seems highly likely that in this case Chopin also wanted to repeat a1 at the beginning of bar 619. Traces of corrections visible in FE in bar 619 point to misunderstandings at the time of implementing proofreading as a possible reason for the unintentionally left tie of that note.
In EE, the notation of bar 619 was arbitrarily completed with rests. 

category imprint: Editorial revisions

issues: Partial corrections

b. 619-620

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

Minims in FE

Dotted minims in GE & EE

..

In the main text, we adopt the enhanced notation, used in GE and EE. The notation of FE is probably earlier, since in the vast majority of similar bars it was changed by Chopin to the latter.

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

issues: EE revisions , GE revisions , Omitted correction of an analogous place

b. 620

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

..

In the main text, we add a digit defining the rhythmically homogeneous irregular group, in accordance with the layout of the quavers in the L.H.

category imprint: Editorial revisions

b. 622-640

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

Crotchets in FE (→EE,GE1GE2)

Quavers & rests in GE3

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In the entire section (to bar 644), GE3 arbitrarily changed the authentic crotchets, opening the bar, to quavers with rests. This completely unjustified arbitrary decision could have been influenced by the rhythm in the previous bar.

category imprint: Differences between sources

issues: GE revisions

b. 641-644

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

Crotchets in FE (→EE)

Quavers & rests ni GE3

..

Like in previous bars, GE3 arbitrarily changed the rhythmic notation of the 1st beat of bar.

category imprint: Differences between sources

issues: GE revisions