No scrollbar on published prototypes
Hi
Just wanted to ask the forum about a few issues I am currently having with publishing an Adobe XD prototype. I am working on a single landing page design in XD with the artboard set to 1366px and the viewport height currently set at 2000px which should be more than enough height to drop below the 'fold' to cater for high resolution large monitors like the one I am working on which is a 27inch retina imac screen with a res of 2500px +.
However when I create the link to share this prototype and view it in the browser, the viewport height cuts off way sooner than 2000px more like a 1000px, does not fill the whole screen like I wanted it to, and does not allow to scroll unless you wheel your mouse inside the artboard zone as opposed to a scrollbar appearing in the grey area.
This is not the satisfactory viewing experience I was looking for, can someone please help me to fix this? (link to prototype is below as well as a screenshot view of the artboard file inside XD before I exported which shows you all the settings of the artboard on the far right.)

Thanks
Dean