[0.77] Movement oddity - armies leave road to go around caravan
When a full army (one with the maximum number of units in it) tries to pass through a caravan on a road, the army will leave the road and go around the caravan, losing one or more movement points in the process. It's as if FE checks to see if the caravan can be combined with the army and decides not, when it should be letting the army stack and pass through. Armies with open slots don't have this problem.