Before the 7th semiquaver in A there is no 
returning e1. However, there is a 
before e1 on the 9th semiquaver, which would be unjustified, if the 7th and 8th semiquavers were meant to be e1. Therefore, an oversight of the is beyond any doubt and it was confirmed by an accidental added in a proofreading of FE (→GE,EE). Analogous bar 37 is written correctly already in A. Cf. bar 12.
Compare the passage in the sources »
category imprint: Interpretations within context; Differences between sources
issues: Omissions to cancel alteration, Errors of A, Authentic corrections of FE
notation: Pitch