I have been having trouble with border end caps not wanting to round up properly. I can't seem to find much about this issue, so I wonder if I'm just doing something wrong.
I start out with a normal shape, for example a rounded rectangle. I hide the fill and give it a border of 6px. I then use the scissors to cut something out and set the end cap to rounded.
As you can see, some shapes will round and others won't. Why? Is it the rounded shapes of 2 and 3? Is this a bug and is there a workaround?