The comparison with the pianistically analogous passages in bar 65 and 69 suggests that Chopin could have committed a mistake in positioning the 
mark in A. Taking into account this possibility, in the main text we suggest a variant solution in which we put the A mark (being the authentic one) in brackets, while the one added by us by analogy with the adjacent passages – in square brackets.
The FE version is most probably an inaccuracy – the reviser would have moved the mark to the end of the bar.
Compare the passage in the sources»
category imprint: Differences between sources; Editorial revisions
issues: Inaccuracies in FE, Errors of A
notation: Pedalling