Rounded Corners in Labels created in Designer not working



Hi, This has been a problem since iOS 9 onwards. All labels created within the Designer and set to have rounded corners are not working correctly.

I have uploaded a sample project to demonstrate this issue.

Buttons work fine (see project)
Labels return to square corners.

Labels created manually within the project also work correctly (but I would prefer to use the designer and not have to re-write my existing projects)

Any ideas?