I have experience an instant death by just walking twice in a row in the same situation. The situation was after the last hive event in Festering ground where you follow the last collapsing tunnel almost at the very end. After one way collapses I walk the only path left and instantly die. After the second time it occured the game crashed.
This has happened twice in a row exactly in the same spot and I cannot say how frustrating it is. I did the level as slayer with 3 bots which takes a really long time. Basically an hour completely lost. More details:
Slayer Bardin, 3 bots
Both times 2 grims, 3 tomes and 1-2 dices.