i'm new and learning houdini by my self, using houdini apprentice. And its amazing …

But now i've small problem with the uv viewport - i think. I didn't find a way to solve this.
After using uvunwrap or uvflatten and next uvedit on a geometry i sometimes doesn't see the object in the uv viewport. But it's there (to show what i mean i have taken a screenshot).
Has somebody an idea how i can solve this?
Thanks in advance.
