What GPU do you use? OS? Directx are updated? Did you update your gpu drivers? What you described is a graphical glitch. Usually related to a faulty gpu (low end crap) or drivers not updated from years, with bad dx9 support.
You need to provide more details if you want help. Also, let me suggest you to try opening a support ticket more than throw a thread digged in an hour and forgot. There is a bug section ingame and on this forum.