This is absolutely working properly and i.suspect you have tried to.nimble through an enemys field of.control which it.cannot.do field of.control is basicaly invisable stop terrain around each enemy character. Scenarii in which i.suspect got you. two of your characters were pinned to a wall of some sort and the one against the wall wanted to nimble through your player and attack the pinning enemy or one a couple spaces.further. since the enemy has a field of control pinning you on the wall it would take two.moves to sidestep his FOC..
