Spectres Walking Slowly

I discovered specifically on any and all blade dancers from Deshar/Dreadnought, and the wind slicers, that they will engage in combat and then permanently walk with a -58% speed debuff. Making them nearly useless as minions. This doesn't seem to only apply to them. I also noticed that the leaping wind slicers no longer leap. Neophytes and Fledglings do not have this walking issue, so I imagine any NPC that has the programming to walk has this bug.