HelloNode not showing both boxes

First tutorial, “Hello SimpleApplication” →

Right-click the HelloJME3 class and choose Run. If a jME3 settings dialog pops up, confirm the default settings.

You should see a simple window displaying a 3D cube.
Press the WASD keys and move the mouse to navigate around.
Look at the FPS text and object count information in the bottom left. You will use this information during development, and you will remove it for the release. (To read the numbers correctly, consider that the 14 lines of text counts as 14 objects with 914 vertices.)
Press Escape to close the application.
Congratulations! Now let’s find out how it works!