Issue with paint tool

Hi there, I’ve painted an object I created, but when I move the object into a larger region, the paint effect disappears. See attached. Do you know what I might be doing wrong?

How are those entities grouped (are they grouped at all?)?

They are grouped. I highlighted all of them and clickeed “create group.”.

That said, I did the same thing with the bottom rectangle, and that behaves as expected:

This is just a graphics card thing. Make the objects 3D and put the fence in front of the large face reversed face and it won’t be a problem.

OK, thank you so much.