In bars 7 and 15 the sources do not contain sharps over the mordents. There are no doubts as to the sound of the top note, while the notation is inaccurate, as usual in such situations in Chopin's works (in bar 7 it concerns only AI and GE3 due to the misplaced 
mark in the remaining sources). In the versions 'edited text' and in the main text we add the absent accidentals.
There is a similar situation in bar 75.
Compare the passage in the sources»
category imprint: Interpretations within context
issues: Errors in FE, Accidentals in different octaves, GE revisions, Errors repeated in GE, Errors repeated in EE
notation: Pitch