PDF Continuous Scroll and Zoom to Fit - mutually exclusive?

If I’m viewing a PDF in DT3, and I choose View > PDF Display > Continuous Scroll, and then change zoom to “Zoom to Fit”, the PDF Display reverts to Single Page and Page Breaks view.

That is, it doesn’t seem possible to view as “Zoom to Fit” and as “Continuous Scroll” at the same time.

Is this by design for some reason that eludes me?

Yes, it is by design by Development would have to comment on it further.