Quick 5 min setup to show my issue. I found out that when you switch to movable skylight suddenly darker shading tone appears on grass mesh. Near to far distance (gradient tone). While switching to stationary, everything seems to be evenly shaded. One more thing to add I have plugged in an HDR and also tried several different HDR in skylight but for all have same problem. For this specific test I have disabled all three distant fields AO, GI and HFGI. This issue gets more worse when you have few of these foliage and this shading appears.
I know one thing that in 4.7.6 there was nothing like that and why on this version? Is there any specific thing that I am missing or any change that occurred which I am just ignoring it?
http://i.imgur.com/QDuu4oR.jpg
Best Regards