Hi eric, this display flickering is a bug that could occasionally happen when launching MoI by double-clicking a 3DM file in Windows Explorer, when that 3DM file was saved with a maximized view in it.

If you run into it again, a quick fix is to switch the view configuration from the maximized view back to split view inside of MoI, once you have done that one single time for that MoI session it should solve the problem.

I've just recently tracked down the bug and fixed it for the next v3 beta, so you shouldn't see it again after the next v3 beta is out.

Thanks for reporting it,

- Michael