are you confusing ADS-B with ADS-C? Or something else? The 787 ADS-B works perfectly well here in Australia and not just the local ones.
"Ultimately, Airservices Australia decided to accept the “risk” of allowing 787s to operate in ADS-B-mandated airspace with standard separation distances, ICAO’s reports show. Airservices Australia also notified controllers about the existence of the software problem."
"Nav Canada first detected a problem on 1 July 2014 when controllers noticed a 787 appearing to deviate up to 38nm (70km) from its planned track. The controllers alerted the crew by radio, but the pilots insisted their instruments showed they were still on course. Suddenly, however, the 787 “was observed jumping back to the flight plan route” on the controller’s screens, according to ICAO documents.
Around four months later, Airservices Australia noticed a similar problem when a Jetstar 787 appeared to deviate “significantly” off-track, then suddenly “jump” back to the planned route on a controller’s screen, the ICAO documents say."
"In rare cases, after passing a planned turn upon crossing a waypoint, the data packets that arrived at the transponder would contain either the aircraft’s latitude or longitude, but not both. In those cases, the ADS-B transponder’s software would extrapolate the 787’s position based on the previous flight track before it made a planned turn at a waypoint. It would continue reporting the aircraft erroneously on the incorrect track until it received a data packet containing both the latitude and the longitude of the aircraft.
“It is important to understand that this is not a safety concern,” Boeing says. "