Originally Posted By: artie505
Is a poster (also) counted as a viewer or is a viewer someone who's done no more than look?

The original poster (ie, the original post) doesn't count. See some of the new threads that read: Replies 0 Views 0.
Anyone who clicks on the thread normally (ie, in the past, prior to this latest 'error') gets registered as a View; if that person then replies, it gets registered as a Reply.

Originally Posted By: artie505
More to the point, have you viewed those threads (which still show -0- Views)?

Yes, and none of them has changed despite repeated views.