This happened to me 3 times yesterday. First of them were when I was shooting from the window of the second floor to the ground level. RPG was sticking out of the window and yet it hit the bottom frame of the window and I exploded. Second was a two level street and I was shooting behind from a small rail. RPG was over the rail, yet it hit it and I exploded. Third was at when I was shooting from a corner. I stood approx. 1m away from the corner and shot the RPG down the street. Or that's what I thought what was gonna happen. NOPE! Hit the corner and I exploded.
The third suicide caused me to rage quit. This game is SO buggy it drives me insane in 30mins after I start playing!