Artboards with a scrollable area leave a thin gap around the edge of frame

I noticed this when auto-animating from one artboard to the next. First artboard doesn't have a scroll but the second does. Once animation is complete, a very thin cropped area appears around the frame allowing me to see content under some fixed position layers. It creates a weird effect and means if you have a scroll that goes under the layers, you can see it through the thin gap. After a few tests I've noticed that this only happens if you are previewing an artboard that is larger than the devices screen, for example, I'm previewing a 1920 x 1080 artboard on my iPhone 8.

EDIT: Also noticed it appears to shift positions by a few pixels or so, maybe this is why the gaps are appearing, Text that is in the exact same position looks like it drops on the Y axis.