The 
mark in A occupies an uncommonly large space – from the octave at the end of b. 45 to the crotchet rest in b. 46. The pianistic sense – increasing the span of the final chord – requires that the mark be placed under the grace note, which, however, was not performed in any of the remaining sources. In a similar situation in the ending of the Prelude No. 5 in D Major, Chopin wrote clearly under the grace note.
Compare the passage in the sources »
category imprint: Graphic ambiguousness; Differences between sources
issues: Inaccuracies in FE, Inaccuracies in FC, Inaccuracies in A
notation: Pedalling