QSortFilterProxyModel reports inconsistencies in working source model

QSortFilterProxyModel complains about inconsistent changes from source model if a hidden item is removed

Steps to reproduce:
Create a model with two items (root->parent->child)
Create a QSortFilterProxy filters the top level item (parent)
Have model emit a dataChanged signal for child
Have model remove child from parent
Proxy prints "QSortFilterProxyModel: inconsistent changes reported by source model"

I have attached a small example program that reproduces the fault by performing the above steps.

After fault, proxy reloads and continues to work fine. If a view is connected to the proxy, it will still display correct. The printout is the only noticeable fault.