Custom particle example not working correctly with new batched renderer

The customparticles example in the qtdeclarative module has issues when using the new batched SG renderer.

The particles are created but fail to be rendered until the window is resized.

To reproduce this

1) Launch custoparticles example and choose the fragment shader example for e.g.
2) Note that the emission of particles seems to stop.
3) Resize the window a little to get another apparent burst

I think that the particles are being created correctly but for some reason they are not being added to batches by the new renderer (until the window resize forces some other code path).