Welcome Dave. Maybe just bad luck? No it's not a known issue, so something is wrong. Maybe more details.. squad craft etc? Warp? How do you collide?
Thanks for the "warp" reply! The following are some details. I bought the game right after the release and have been playing it since, no problems or issues with the game. In the month I've been "flying' I have never been rammed By another plane. The only time I was in a colision was when I got target fixation and rammed into my target in my early play.
With the 1.20 patch I have gone on 4 missions and been rammed in every one of them. Once, on takeoff my flight mate came over from my left and hit me on takeoff. My second misson, flying for Jasta 2 in 1918 with a DR1, 2 others in my flight ( I was not the flight leader) no warp, just flying toward mission, my flight member moved moved over and hit me in the left side, I died. So I changed pilots and went back to Jasta 2, 1918, flying a DVII, I'm at the outside and high in a furball, just shot down a Camel and am firing at another when I'm rammed in the left side again, I died.
Went to quick combat, 56 Squadron 1917 flying Se5a, in a furball with Albatros DIIIs, shot one down and going after another, again at the outside of the fight at higher altitude, not sure who rammed me, again seemed to be from the left side.
Everything else in the patch seems to be working very well, I actually got credit for some kills!!!
I have English OP. Running XP with Nvidia 7600, 2gb of ram and 500HD
Hope this helps, keep up the good work

Dave