All QSGGeometryNode nodes are being uploaded to GPU even if they don't change

In the example there are geometry nodes which are explicitly not wanting to be batched (done by using which ever index width stops that from happening). They are correctly ending up as separate batches with a common clip root parent, but when any node in that tree changes (added or removed), the entire subtree uploads all vertices again.

To reproduce, please run the attached example and notice the application output.