I have this issue too. I just completed a terror mission and bagged my first heavy drone wreckage. When the screen that normally shows autopsy results pops up, instead it shows the default xenopedia screen (condor entry I think?) and I cannot close by clicking on the X.
I can close this window by hitting ESC however.
Once I've done this, the game crashes soon after. (Crashes immediately if I push one of the buttons up top, like base structure tab or manufacturing tab)