The additional trill in GE is most probably a mistake by the engraver, who placed 
a crotchet too early and either did not notice his mistake or forgot to remove the wrong mark. Anyways, the trill was absent in [A] – this bar was not written out in the manuscripts, but marked in an abridged manner as a repetition of b. 60, in which there is no trace of that trill. Moreover, there is no convincing evidence of Chopin proofreading GE1. Nevertheless, we have to admit that such a diversification of the last appearance of a repeated phrase would fit into the Chopinesque style.
Compare the passage in the sources »
category imprint: Differences between sources
issues: Errors in GE
notation: Ornaments