Rotating the perspective view with the RMB and trying to lock it in to an orthogonal view by pressing Shift+Cmd doesn’t always seem to work here. It seems to be possible to lock it to a view that isn’t a true orthogonal view, but some sort of perspective view with a really long telephoto lens. It’s not always easy to detect that the projection is off. The view is also ‘jumping around’ sometimes when locking into a ortho view.
I noticed the problem when trying to project a curve on to a curved surface and got a strange result.
V6 doesn’t have the problem.
It would also be nice if the “One View” viewport labels (in the upper right corner of the viewport) would reflect the orthogonal projection - to confirm that it is a true orthogonal view.