How to remove decorative bars from all 4 corners?


I just started using BenikUI and I love it. My only issue is that I would prefer to not have any of the decorative bars. See the red arrows in the image below for what I am referring to.


How can I disable those bars? Weirdly, the ones in the corners do not seem to be attached to any frames, they are just standalone. I can toggle anchors and move every single frame out of a corner and the blue bar remains. Any help is much appreciated!