You can run XC Soar on the Oudie 2, but you do get the occasional drop of navboxes from the screen.

The easy fix to this is to swipe right on the screen to move to page 2 and then swipe again to move back to page 1.

I think you can also just tap the screen to make the menu boxes appear and then cancel out of the menu and the graphics boxes are restored.

The graphics "glitch" is nothing serious and happens occasionally and only when you change something on the screen. If you are in Nav mode and change nothing the display is fine.

There are any people running XC Soar on an Oudie, despite the "warning" on the XC Soarp page. It's not perfect, but it works.