I’m not sure to understand exactly the effect you’re trying to describe, I fail to also see what the pictures are illustrating, but there is also an annoying distortion with WMR and the G2 I will try to describe, it might be somehow similar.
When enabling motion reprojection with WMR OpenXR preview (v105) and using OXR Render Scaling between 50 and 60 included, the G2 is displaying the views as-if there is a larger FOV. It is like having a strong pincushion distortion (center goes smaller) and it isn’t even aligned to the head rotation position, which makes the distortion for example bigger when looking left or up than when looking right or down.
The only cure I know of for this is using at least WMR OXR Render Scale at or above 65.