[1.3.3287] AI always walking outside of the effect of the shield pack

[publicuser]

AI equipped with the shield pack will deploy it when I shooting them, but they always walking outside of the effect of the shield and rush to me, then dead on my fire. Not only the guy who deploy it, but also teammates behind him. They walk into the shield pack and pass it without staying for a seconds.  It seems they just ignore the shield pack effect. It's a wrong behaviour