Well first off, using a throwing lance it seems you cannot stop charging horses with it, they just truck u over anyways.
Also i noticed that when using it with a shield, you cannot pierce someone who is wearing anything heavier then a byrnja. though it has 26pierce damage, it seems to truly not do that amount.
Last post, if you pick up a weapon that takes two slots, and you have some lances, they dissapear, and you pick up the weapon. Your lances are gone, not on the ground.
But the top post is the more pertinent of the three, seems not alot of people use them, so to have bugs is expected.