In A there is no 
before the topmost note. It is a result of an oversight in the change of notation of this chord from f
1-c1-f2 to e1-c2-e2. The accidental was already added in FE (→GE,EE).
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources; Corrections & alterations
issues: Corrections in A, Errors resulting from corrections, Enharmonic corrections, Authentic corrections of FE
notation: Pitch