It doesn’t matter which envelope mode you are using (sustain, loop, one-shot, sample loop) …the multisegment envelope can’t handle more than 6-7 nodes. Try yourself…Put a drone-sample and add nodes (amp, filter or pitch…it doesn’t matter).
The manual says “To delete several selected nodes, press [Delete] or [Backspace].”
It doesn’t work on my iMac with the wireless keyboard.
iMac27 late 2013, i7 3,5 Ghz, 24gb,
hope someone can confirm