Problems with essential graphics elements cutting off

[streiser]

I have a problem where I can't extend a rounded white bar past a certain point on the screen--it just cuts off at a certain point: 

I expect maybe I'm overlooking some setting, but I've searched the support docs and community posts and googled and googled and can't seem to figure out the answer... Any help appreciated! 🙂

[Ann Bens]

Check the Vector Motion, should show default settings.