I've been playing RTS games since they existed. I created my first home-based network solely to play RTS games when they came out in the early 1990s (Dune II, Warcraft, Command and Conquer, etc.).
I am seeing a bug repeated here that has existed in many RTS games I've played - a pathing issue where critters can't find a correct path, and so get stuck on each other, terrain, or graphics which they mistake for terrain. I also notice the train-track syndrome a lot (where a bunch of creatures only want to follow a thin path like a train on a track, rather than riding shoulder-to-shoulder).
I made a video which shows creatures stuck this way.
Sometimes I'll be out on the forefront, fighting wave after wave of enemy creatures, and I'll be wondering where mine are. I'll zoom out on the map and see them all stuck on my end of the world, nowhere near where I'm fighting. They're all stuck on a wall, or facing each other, or just standing there dumbly. When I trail some enemy by them, they'll snap out of it and start attacking enemy. When the enemy is dead, they will then continue on their intended path (they don't return to being stuck).