I have the same problem. What I noticed is if I get the LBML to find the radar and the map shows it is at 100%, all I need to do is move the camera the tinyist amount and the Radar % drops to 0. I can get it work again by putting the mouse over the radar like the others said.by Siriane Dreamrider - Issue Troubleshooting
I'm on Cyrene and the radar shows 100%. The longitude and latitude are correct when the radar is captured but on the map those values differ significantly and are do not change even when the in game coordinates are changing. No position marker appears and pressing "P" does not cause the map to zoom to the coordinates. Moved to Caly and found the same issue. See the attached screenshby Siriane Dreamrider - Issue Troubleshooting