Need to specify "spacing 0" to make justify behaviour work as expected

[nimser]

Is some cases I cannot get the justify property to properly spread elements across a row.

Here is an Ellie SSCCE demonstrating the issue. As you can see the blue use case justifies properly the text and a row as children of the parent row. However, the purple use case does not justify the content, and the orange one works but with a hacky spacing 0 stuffed in the attributes of the parent row.