In the demo, there's a moment where you have to use the Thief's spidey-senses to spot a trap. I was confused and tried to walk on the red highlighted trap tile. Realising my mistake halfway through I clicked to move somewhere else, but the Thief of course still walked to his original destination.
But as the rock fell, squashing-animation and all, he followed my second order and kept moving. That resulted in him suddenly popping into midair as if standing on top of something, and constantly falling suspended in midair. Of course he can't move from there at all as he is stuck