- 
    Bug 
- 
    Resolution: Done
- 
    P3: Somewhat important 
- 
    5.7.0
- 
    None
On https://doc.qt.io/qt-5/qtquicklayouts-overview.html#size-constraints there is an empty code snippet.
The code is
\snippet windowconstraints.qml rowlayout
and windowconstraints.qml exists in qtquickcontrols/src/layouts/doc/src/snippets/ with
    //! [rowlayout]
    //! [anchoring]
    RowLayout {
        id: layout
        anchors.fill: parent
    //! [anchoring]
        spacing: 6
        Rectangle {
            [...]
        }
        Rectangle {
            [...]
        }
    }
    //! [rowlayout]
with the "anchoring" snippet working just fine (lower on the page in section "Connecting windows and layouts").
So maybe those tags cannot be nested?