I'm not sure if this was brought before, but the pathfinding is lacking even for simple movements. It seems the pathfinding IA does not take change of direction into account, often resulting in a few action points lost on nearly every movement.
In this example, the default path is to first change direction, then move one tile, then change direction again to move. One action point could have been saved by advancing in the red tile first, then change direction, then advance to the destination.
It may not look much, but simply avoiding an obstacle often end in 2 or 3 lost points. And this happens to nearly every movement.
By the way, the game seems to break windows'screenshot management when in fullscreen and non native resolution. I had to switch to windowed mode. Thankfully, the standard ALT-Enter shortcut works in this game.