Yup, this is a consistant problem and many are having it. I just left TT to post about this and saw this thread. Asked several if they had the same problem and got alot of affirmatives.
FTroop and Sedonna, killed me 3-4 tmes from roughly 2K while sitting on the edge of a tree thicket. Could see the rounds come in, but through the main gun the trees were unresolved and so no GV could be seen at all.
This is pretty constant for me.