I'm betting it's the switch from -180 to +180 Longitude. I've written several moving map programs, and mine don't handle the situation either. They're for land use, so it's overhead I don't need.
(said some stupid stuff above, like reversing longitude with latitude and 190 degrees instead of 180 - yeah, I do this for a living - sheesh)
You said yours were for land use. (I hope neither you nor your company are selling any of these map programs as a reusable component.) Anyway, the F-22 avionics systems would (should) have had a requirement for crossing the IDL as well as functioning at all Lat/Longs and altitudes. If the testing phase was allocated enough resources, which almost never happens, this might have been avoided. Although now I see other replies which doubt this really ever happened. Maybe this story is just another "tech journalist" getting the details wrong, which almost always happens!
That's my guess as well.
LOL! Like its never happened to us...