Live demo display window not appearing when following demo


I have installed the new image and cloned the latest code. When i run the live examples from here. it all appears to run ok, I get scrolling commands and results but I don’t get the viewing window appear. Any ideas why?

The live displays a picture of the camera fine

Here’s a video of me running the code and its response.


Does the application output any error?
Would you mind to share the complete output log for us checking first?