Chopin initially wrote a 
in FC and then deleted it, probably replacing it with an accent. However, in the proofreading of FE, which must have been performed later, he used that indication again. Since we generally draw the Scherzo's performance indications from FC, which is most carefully developed by Chopin in this regard, we do not include that in the main text. However, taking into account the fact that Chopin would frequently use a combination of and an accent, we consider it to be possible to add that indication (in a variant form) to the accents adopted in the main text.
See b. 538-540
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category imprint: Differences between sources; Corrections & alterations
issues: Chopin's hesitations
notation: Verbal indications