It's back!
Enemy T34 that seemingly can't be hurt by our tanks (he lost engine to a bomb):
Moving closer in my Panther, I discovered he was actually behind a hedge that had not been rendered previously:
I made sure I was in Ground View mode all the time.
AH Settings: Detailed Terrain: ON, Detail slider about 50%, Ground Detail Range about 1 mile, Win XP, Nvidia GF 9600GT