Units not properly pursing routing enemies

[bennyg]

This has become such an annoyance.

Basically the problem is when I tell a unit of mine to chase down and murder a routing enemy unit, they reach them, and come to a complete and utter halt. Clickspamming doesn't work. Nothing does. Horse archers will fire at will at them but not chase em down in melee. Most annoying thing is it's totally random.

Have not noticed any effect of morale/fatigue, however I have noticed it happens more often when chasing routing enemies back to their gates (routing to town square) when they sally forth. Once inside their gates however they chase and murder as intended.

Anyone have any ideas how to these pacifists into routing enemies to turn them into

EDIT: am using EB 1.1 + all fixes on RTW-BI exe. Have played RTW van, BI van, RTR:PE 1.9, and for a short time ExRM and have not noticed it until EB. And no guard or skirmish mode is not enabled.