I had a weird situation today – an orc charge-jumped from level 1 to level 2, bypassing the ground level (level 0). Normally you can’t move from level 0 to level 2, you need to find a connection (which is level 1), so I assume it’s a bug. I recall somebody made a thread in which he reported an exact same situation – an orc warrior somehow jumping from level 0 to an insanely high ground (4 or 5). It’s basically what happened to me.