So, let's say I have a shape and I use the shape/path stroke. I set it to 5 and there's a stroke now. Cool. I modify some things in the shape path and the stroke disappears. If I set the stroke level higher or smaller it comes up again but if I set it to normal again (5) it disappears again.
This problem is really annoying.
Here is before I modify the shape:
you can see I didn't change anything in the stroke panel