QML ShaderProgram doesn't work on an Item3D if the Mesh source is a property

Hi,

QML ShaderProgram(s) doesn't work on Item3D(s) which define a Mesh with a source passed as a property.

property string myObjFilename: "Sphere.obj"
mesh: Mesh

// Shader will not work
mesh: Mesh

// Shader will work
effect: AnEffect{}

Look at the attachment for a "working" example

Regards,