K11 Markdown preview "Under over split view"

I like the new Markdown preview ( images are working :thumbsup: ), only I’m missing the Under over splitview.
Why I normally use the “Under over split view”, is beacuase I’m missing the horizontal space.
If I have both sidebars open and I have the minimap scrollbar enabled, there is not that much space left:

Is it possible to change it in a under over splitview?

This is not a feature atm, it’s planned here:

Thanks, good to know.