Mendelssohn Rondo Capriccioso chord discrepancy

Does anyone know why some editions have an A Major chord at measure 134 and some have A minor? I did a bit of research but would love an answer from folks on here who know more than I. 

My take:

Many European players seem to have the same edition that contains A Major. It makes more sense as an A min chord. I've seen French players play Major, Asian players play Major, etc. but the chord does, in fact, seem to be a minor chord in the earliest editions. It is an A min in August Fraemcke's edition, Clemens Schultze's Braunschweig edition, while being *A Major* in B. Schott's Söhne edition (1886). The answer would seem to lie later in the piece, when the motif occurs in octaves in the left hand, with arpeggios in the right. The C# doesn't appear until the end in the l.h. melody, which seems to confirm that the chord should be A min at mm.134. At any rate, the Schott edition is later and I'm guessing the inaccurate one.

Thoughts?