Spell Casters do not pull when they loose LOS (line of sight)

Spell Casters do not pull when they loose LOS (line of sight)

By Cromisa:

Spell Casters do not pull when they loose LOS of the character. (When they are out of mana they come up to melee which is fine.)

To reproduce:
1) Find a spell caster - one that is near an object (Wall, Barrel, Box etc) you can hide behind
2) Attack them, then hide behind the object
3) Spell caster will stand in its spot waiting for LOS before casting again

What should happen:
Spell caster should attempt to move into melee range and cast a spell if LOS is found along the way