tranlucent material issue

Does anyone know why this error happens between the transparency of the curtain and the glass behind the balcony?

exmaple here link text

your video is offline, can you upload it again?

sorry video are fixed

This is generated from background external scene that is made by parallax occlusion material. There is a video that explane who it work: UE4 Parallax Occlusion Mapping Walkthrough - YouTube

There is a little problem with traslucent environment in front of paralax oclussion material so if you want to use a traslucent iteam you need to remove the parallax from the background, but this make realy flat and unrealistik lokking out the window. So you need our te remove traslucent our parallax. Becouse both use lights to fake a powefull effects.