I have encountered an obnoxious bug which has unfortunately rendered what seemed like a very promising start unplayable.
Image in spoiler tags for size:

To explain- I want my Sov / Champ group to fight the darklings a couple tiles to their east. When I try to move them there manually however, they instead attempt to charge toward some random fogged tile in the middle of a Wildlands. If I try to move them towards a single tile in any other direction, they always ignore me and double back trying to enter the Wildlands. I can get them to attack the darklings by directly right-clicking on the enemy, but then when I try to move the next turn my units go right back to running to the Wildlands.
I believe this issue started after I reloaded a turn.
In what may be a related issue, the game has also become suddenly resistant to alt-tabbing; I can see my taskbar when I alt-tab, but I am not able to jump to any program other than FE while FE is still running. Usually the game allows me to freely switch between programs.
Exiting and restarting the game has had no impact on the pathfinding bug.
Edit: Here is a different bugged turn from a little big later in the same game- after you end the turn, try moving on the next to the 4/4 tile adjacent to the Sov, and watch your units auto-direct themselves to a random point in the fog.