[Argyess]

Normal Lens ident used before News at One. This been the norm? Only caught Six and Ten recently and it's been the newssafe tree ident

Certainly not the norm, no.

The Christmas news safe ident got pulled last year due to it being a scene by a lake and there had been an incident of children who'd died after falling through ice.

I reckon that it's probably just a case of your region accidentally playing out a normal ident by mistake.