In A Chopin started writing the indication slentando at the end of b. 17, just after the last quaver in that bar. In FC the beginning of that indication occurs slightly earlier, and the handwriting is more condensed, as a result of which, in GE, in which b. 18 opens a new line, slentando was divided into 2 parts; moreover, it was moved further to the left. In FE the entire word was placed in b. 18, which, according to us, better conveys the notation of A. That notation, although not entirely accurately, was also reproduced in EE.
Fortunately, the placement of this indication, although problematic for editors, does not make a huge difference in practice.
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category imprint: Differences between sources
notation: Verbal indications