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FWIW, I have this issue in my 2023 Model S (delivered in October).
But what I just noticed is that the street names reliably appear again when I pull into my own driveway (and even before I put the car in Park)
(Of course that's where I least need them: at home...)
My only guess right now is that this is related to being on wifi.
I have premium connectivity, and get traffic information reliably; so I don't know why wifi would matter.
But that's at least my guess now: you have to be on wifi.
Anybody else see that?
I might drive by my local service center (about a mile away) and see if the street names appear when I go on *their* wifi.