I could understand a new road (or new restrictions) being unknown by the satnav for a while but that missing road in the screenshot i posted above has probably been there for 100 years.The only time I've had any issues is with very new roads,
Once I've updated the map, I'll have to see if the road has reappeared and if it now has any awareness of city roads that are either dead ends or where cars are not permitted. it's previously attempted to send me down roads where it's clear from the signage that cars have not been permitted for years. On one trip out of london on a friday night, it did this on 4 occasions and had to switch it off and get my wife to direct me on her ipad.
When I bought the car (used) last year, I kind of assumed that all these sort of problems had been sorted out in a 2018 car.