Qt Quicks Layout - Responsive layouts example - the "D"section is not visible if the window is not big enough

Description:

The "D"section is not visible if the window is not sufficiently big. This causes an issue as this example is used to demonstrate a responsive layout.

Steps to reproduce:

1. Open the Qt Quick Layout - Responsive Layouts example
2. Observe that there are only "A,B,C" sections
3. Maximize the window
4. Observe that there is now a "D" section

Expected behavior:

The "D"section should be visible no matter what the size of the window is.

Observed behavior:

The "D" section is not visible if the the window is small (or has the default size)

Special notes: