See for yourself, Manifest Armour has some wonky behaviour. MA benefits a lot from stats on boots (movespeed x4), so it is quite easy to reach 150%+ movespeed with it. That normally is no issue, but the way that movement is designed for minions requires the minion to make a hockey stop before changing direction, which can lead to some stupid situations like in this clip.
My suggestion is quite simple:
a) improve pathfinding for melee minions so it doesn’t run past enemies
b) allow minions to deaccelerate their movement faster
And if anyhow possible, it would be nice to have a more fitting running animation for higher movespeed values? Would make it look so much nicer!