I posted on TomTom forum and also sent them an email. If all who hate this unreasonable 'safety' feature do the same they may change it in their next software update.
It is so stupid that you can enter POI but not an address while moving.

 

I assume you mean type an address while moving, voice recognition works fine. You can't type the name of POI while moving, either, but you can select it from the scrolling lists (yeah, that is safer?). It is so dumb that the passenger can't type a search for "diner" while on the highway without dangerously pulling over, some safety feature. Apparently most (if not all) other TomTom units allow you to turn off the dangerous "safety" feature. I make it my single complaint on my Mazda owner surveys.