In the version of AsI and A (→GE→FESB) the dot prolonging g1 refers to the quaver and indicates that it should be held to c2 (actually to g1, which must be played again). In the version of FE1 and EE this dot refers to – also or only – the semiquaver, as a result of which the next note must be shortened. It is difficult to say whether the emergence of the other version in FE1 resulted from Chopin's proofreading or from the interpretation of the slightly misleading Chopinesque notation by the engraver or reviser, as in EE.
Compare the passage in the sources »
category imprint: Graphic ambiguousness; Differences between sources
issues: Authentic corrections of FE, FE revisions, Dotted or even rhythm, Inaccuracies in A
notation: Rhythm