The amount of times I see my ranged units walk up inside of a Shadow active 
or a stacked 
physically hurts me.
How did you manage to downgrade your "intelligence" this badly? They weren't nearly as dumb as this in set 1.
I'm positive it's because they added two additional hex rows to the game. It used to be 3 Rows on each side, it's now four on each side.
I can almost guarantee that they did not do any additional fixing or coding to include this in the AI which is probably causing it to bug out.
i've never seen a ranged unit walk to a melee unit unless it's to shoot them, can ya provide some footage of the bad ai
The only time ive seen this happen is with singed. something about him makes ranged run ahead of him.
Maaan set 1 was super dumber then set 2.
With Range 2 it's unsurprising, though annoying, to have them advance at the same time as a melee and end up together. But I've definitely seen it happen with Range 3, multiple times, and it can really hurt your strategy when it does.
I saw the same thing about Ranged units.
