Strange "transparent" cloud in mountains since RC4

[dabr0an]

Hi

I'm using P3D v5.1 with HF1 been testing with Activeky Beta every updates, congratulations on final as RC4 released but then I have this strange looking clouds whenever the mountain terrains are in the back ground showing as pictures.

I don't recall if they were looking like this before RC4 installed I've tried if I turned off Activesky it disappears.

anyone?

 

[dabr0an]

further test, it seems has to do with the reflections setting either one of the item : Terrain, Simobjects, Buildings been clicked.