QTreeView in ExtendedSelection mode scrolls to top if the last item is removed

If you run the attached test case, scroll the view to the bottom, click the last item, and click the "remove last item" button, the view scrolls to the top unexpectedly. This did not happen in Qt 4.6.3.

Interestingly, the bug does not occur in SingleSelection mode (in my test app, you can switch the selection mode using the combo box on top).

Could be related to commit b72a2bcf8d813ec6b76eb6cc986408c75a1c96bf which changed a lot of code related to removing/inserting items in a QTreeView.

I'm using the 4.7 branch, commit 2b527006a3e9147a447a08d78004e20a7ac3d17c

This was reported as a Dolphin bug, see https://bugs.kde.org/show_bug.cgi?id=246997