doc.qt.io/qt-5/qml-qtquick-pathcubic.html, http://doc.qt.io/qt-5/qml-qtquick-patharc.html, etc. all have documentation that says:

The following QML produces the path shown below:

and then has a picture of the resulting shape, which is misleading without extra context, as it only produces that shape within the context of PathView. Users reading the documentation don't make that connection, so they assume that these types can render shapes on their own.

I pushed one patch for Path, but there it was just a note:

https://codereview.qt-project.org/#/c/203504/

Perhaps we could do something similar for the types whose documentation has images, so that users aren't confused. A note at the bottom might not be enough though; we might have to reword the existing docs.