Am I understanding this right? The issue is that cavalry gets stuck on deep formations? Because that already happened in 1.9 (and possibly in earlier patches, I didn't really do any tests before 1.9). I'm not sure if it's an AI problem or a physics problem though. Maybe the problem is that when they get stuck, they don't try to pass through again (or are maybe unable to)?
One okay solution for me is putting the cavalry in skein and make them advance to the enemy while staying in formation, then pressing charge when they are near the enemy. Skein formation got a lot better after 1.9. Another is putting cavalry in several formations (at least 3) and charging with them individually, but I find it a bit too tedious for my liking to make them attack with different timings.
One okay solution for me is putting the cavalry in skein and make them advance to the enemy while staying in formation, then pressing charge when they are near the enemy. Skein formation got a lot better after 1.9. Another is putting cavalry in several formations (at least 3) and charging with them individually, but I find it a bit too tedious for my liking to make them attack with different timings.