I didn’t see a version number for the extension but I got it from the MS store yesterday (14 Aug) as in the developer tutorial here. The only version of Rhino iinstalled is the 8 WIP but I don’t know if that’s important to reproducing it.
Start to create a new project, RhinoCommon Plugin, C#.
The bottom of the UI is cut off like this:
It’s not scrollable and the window can be resized vertically but that doesn’t have any effect on the sizing/placement/display of the internal elements so it stays cut off even if there’s plenty of space.
From the screenshots in the tutorial, I know that last part cut in half is the last UI element so the problem isn’t a blocker though the path it intends to use is hard to read. The cut-off button is clickable and works. The resulting plugin does compile but I haven’t tested further than that.