Global menu progress bar not rendering correctly in UE 4.13 - used to work fine in UE 4.10

Hi folks,

I’ve got an issue with the progress bar that goes across the screen. On UE4.10 it was fine but when I opened the project in UE4.13 the bar itself seems to have issues in 3d, as in the left eye and right eye seem too far apart, but this is only on the bar itself and not the whole scene. Has anyone else encountered this?