Its the mission year for me. Had two missions, one set in 1987 the other in 1989. Was doing my head in as to why I couldnt align the Hornet, carrier and land. Waited up to 5 min before switching to Nav. Worked fine for me earlier on Persian Gulf (2019), but not in the those two 87 and 89 Caucasus missions.
Then switched the 1987 one to 1997, and voila. After timer hitting 1m30 in the align, I switch to Nav and boom, map.
Also, not only a missing map issue. It had no idea where it was. Setting a waypoint would be 384nm away (was 100nm away), and wrong direction too, when it was 1987.