The traces of corrections performed in print of FE reveal that each of the three octaves in the 1st half of the bar was initially written down without division into parts, on one stem pointing downwards. The corrections in A suggest that Chopin introduced a similar change into A – the removed elements correspond to the octaves provided with stems pointing upwards only. It may be another case of "parallel" corrections of A and FE1 – see the description of that edition.
Compare the passage in the sources»
category imprint: Corrections & alterations; Source & stylistic information
issues: Corrections in A, Deletions in A, Authentic corrections of FE, FE revisions
notation: Shorthand & other