Got same problem
After completed all NY manhunt activities, fast travel back to DC to do the Coney Island missions
Once completed, investigation update screen shown and then open the map will see glitching map with big outcast logo over White House, map blinking, NY map logo, Camp White Oak, Manning Zoo all the things above White house shown out of bounds
Unable to travel to NY from the map or even the heli in front of White House (it allows you to travel and the heli GC shown but will back to DC eventually)
Enter White House will found the lighting is different and no broadcast message
It is game breaking and cannot got o NY for the manhunt bounty