Hey, the Delay pipe does not allow for notes to be longer than the whole length of the delay, so the note on & offs of repetitions don’t interfere with the note you played.
If you want notes to be delayed exactly by some particular millisecond amount and avoid the issue, some trickery with Transform pipes is possible to get around this, see this preset:
Delay Note on and Note Off by 500ms_fixed (1).mhp (423 Bytes)
The first line produces only the delayed Note On events, the second line deals only with delaying the Note Off events.