Wow that's bad
I thought it had tomtom logic powering it, therefore it shouldn't have these issues.
Sounds like very badly formed mapping data. Not good for an official release.
OK, so this is a big misconception here. Someone I know used to work for TomTom (but nothing to do with teleatlas or licensing). I know that their code is an awful, monolithic nightmare that was written by people decades ago who are no longer with the company (and can't be changed because nobody understand it or which other parts depend on it).
TomTom's brand is dying. People don't need satnavs any more. Years ago, when they were still making money, they acquired their main map data supplier - TeleAtlas, for $1Bn. TeleAtlas provide mapping data to thousands of companies; even Google used it for their maps before they got their own data. Even now I bet Google still cross-references it with their data to make sure.
Until now, the TeleAtlas brand had always existed side-by-side with TomTom's. For example, here's a picture from Google Maps showing the TeleAtlas name instead of TomTom's. That's how it's always been for TeleAtlas.
Now, as I mentioned earlier, TomTom's brand is fading fast. That $1Bn they paid for TeleAtlas is now bigger than their whole market cap. If you've ever tried to use their app, you'd know how awful it is. They managed to score a major, major coup by getting their logo so prominently features on the iOS Maps app. It's the first time I know of that they've used TomTom's logo to represent TeleAtlas' data.
Now, Apple isn't using any of TomTom's algorithms (it's all part of this monolithic mess of code that nobody inside TomTom can understand, let alone anybody from Apple!), but that's the effect this branding exercise makes out. I've seen the source code for the iOS app, and it's basically an iOS UI layer thinly-placed over a hacky, decades-old engine. As I said, there is no way that Apple is using a single line of code from TomTom. They're using TeleAtlas' map data (probably with their own changes or corrections), but that's it.
The bad news for TomTom is that this going to totally backfire if Apple's Maps are a flop (uhum).