The traces of corrections in print visible in FE prove that both in this bar and in analogous bar 111, it was only the last semiquaver triplet in the L.H. that was originally encompassed with a slur. In both places, Chopin prolonged the slurs; however, in the discussed bar, the proofread slur did not encompass the first triplet in the 2nd half of the bar. Taking into account the fact that in the final fragment of this movement of the Concerto, filled with triplets, articulation in all the remaining semiquavers is defined with slurs and staccato marks, the fact of leaving one triplet without markings prompts us to suspect a mistake at the time of implementing this proofreading (the mistake could have been provoked by the misplaced 
mark). Therefore, in the main text we suggest a longer slur, modelled after unequivocal bar 111. Such a change was introduced in GE3.
See b. 108
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category imprint: Editorial revisions; Corrections & alterations; Source & stylistic information
issues: Authentic corrections of FE
notation: Slurs