Beta Version (x64) on Surface Pro has a scaling issue

I installed windows beta (x64) on my Surface Pro and the windows were enormous.

I tried re-installing a couple of times but the windows for Scrivener were so large that navigation was futile.

I un-installed the x64 Beta and installed the x86 version and I was good to go.

The application runs fine and the window size is what I expect.

Not sure if this has already been reported. Maybe it is a quirk of the Surface Pro?