Lack of slurs in EE3 is certainly an error. The slurs in EE4 were added as a part of far-reaching additions, including bars 2-16 (cf. also the note to bars 9-16).
In both autographs, the slur in the 1st half of the bar does not embrace the extreme semiquavers, which is almost certainly only an inaccuracy of the notation. From the formal point of view, AI has such a slur also in the 2nd half of the bar, which in this manuscript is briefly marked as a repetition of the 1st.
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category imprint: Differences between sources
issues: Errors in EE
notation: Slurs
