it was batch 2, and it happened in low starting goblins (at least it was way more obvious that way, I'm not sure if it happened on bigger populations, it happened at least thrice, and, as I said, it happened when I tasked 2 duties on opposites of the map, and the goblin that was choosen to do it was in a tunnel between the two points. I think I should point out that the goblin didn't had any delay, all the animations, happened one after another, probably it was a very unlucky proc of an obscure bug, who knows!
On the submission genes right away, that's how I got it to work the quickest, I just pulled off the vore without rolling for sub genes, so that makes it almost 6 hours, anyways, even if you choose to not continue it, I'm very glad of testing this game! I liked it and got a good impression on it!