ToME: the Tales of Maj'Eyal

Just had a fight with immovable monster (mold random boss) who had onslaught talent. I got knocked back every time i get close to it.

http://te4.org/wiki/Onslaught_(talent)

Take an offensive stance. As you walk through your foes, you knock them all back in an frontal arc.

Is it bug or not? What do you think?

It must be a chronomancer; it's clearly folding space somehow.

Seems to be the classic case of unstoppable force vs immovable object...