If the window is shrunken on the profile page, the widgets are squeezed together and start overlapping each other. If expanded again, they all reposition to the left in a vertical line instead of returning to their normal positions. Additionally, on the Jam Results page, the options (overall and criteria) may continue off the main 4:3 UI area, and when advertisements pop up, most widgets are pushed to the right off the UI area as well.

This doesn't have to be fixed by adding widescreen support if that's undesired, but if that option is chosen, there could be an option to keep 4:3 profile/group/jam pages.