If you connect an Envelopes node and an Envelope Pattern node with a Multiply node, and add a Greater Than Zero node to the output. The Envelope Pattern will only play once and NOT loop at all unless you press pause and play again in the middle of playing. It always happened whenever I did above. I think it is a bug.
Thanks Zack, looking into it, your help is much much appreciated. 🙂
Zack I think I can confirm this is working as intended in the new update, see https://audionodes.com/snippet-test/m21OCx (online public test version)