AO_FADE_START not working with SSAO

I made sure to get the latets reshade fm version, but it still doesnt work(no errors), AO just comes to a sudden cut once it reaches AO_FADE_END distance. i tested other AO methods and only SSGI seems to use both AO_FADE_START and AO_FADE_END resulting in a nice AO fade out. Is this a bug? or is it just not possible with SSAO?

This is in fallout 4, in case you need to know. Thanks.