CH
In radio, presenters are told not to say bye because the station doesn't end. It invites people to switch off because it's over - I don't see why this wouldn't also apply to the end of the news handing to the regions.
But to be honest, I doubt people notice and I agree you should send this in to Newswatch.
Considering 'bye' is under a second long, I don't think that's a good excuse. Anyway, it's personal preference. I just think it's nicer with a goodbye at the end.
In radio, presenters are told not to say bye because the station doesn't end. It invites people to switch off because it's over - I don't see why this wouldn't also apply to the end of the news handing to the regions.
But to be honest, I doubt people notice and I agree you should send this in to Newswatch.