For a this build and I think the previous one as well, sometimes the first mission on the DOFF list (sector in the case I just saw) is shown twice. Mousing over these missions causes a graphics stutter that persists until I switch tabs, advance to assigning DOFFs to the mission, or close the DOFF interface.
I'm pretty sure it's a visual/interface duplication only, not 2 distinct opportunities to take the same assignment, because if I run one, the second disappears from the list, too.
This is actually happening to me every single time I open the doff menu anywhere. Also the cursor starts to scroll through the list endlessly and make the menu movement noise as if I was shifting it with the arrow keys. It goes so fast I literally cannot get any doff missions to work unless I hammer on the enter key or click on it frantically fast with the left mouse button.