Removing a node on 1. level with child nodes is not correctly reflected in the currently selected render specific tree. The tree model is updated with all data nodes of the data storage before the remove-process is finished so the data storage still contains the to-be-removed- data node.
If this also happens in the QmitkDataStorageSimpleTreeModel needs to be investigated.

Pushed new branch T26394-Render-window-manager-tree-view.

Possible solutions:

1. Add

if (!parentItem)
    return QModelIndex();

to QModelIndex QmitkDataStorageSimpleTreeModel::parent(const QModelIndex &child) const

2. Remove

if (m_Root)
{
  m_Root->Delete();
}

from void QmitkDataStorageSimpleTreeModel::DataStorageChanged(). This will lead to unreferenced pointers so I suggest to work with smart pointers (for this QmitkDataStorageTreeModelInternalItem needs to be modified).

Pushed new branch T26372-MasterIntegration-2019-06.

Pushed new branch T26395-Overhaul-layout-selection-widget.

Pushed new branch T26385-remove-undeclared-function-from-QmitkFiberQuantificationView.cpp.

@kislinsk Thanks for your quick fix. I had a look into your changes, this looks very much like an overdue cleanup. Thanks again!

Does not crash anymore, but the network node's balloon info text remains visible and unchanged, sticking to the world geometry even after deleting data node in the Data Manager.

Someone fixed it, thanks.

Underlying geometry problem seems to be fixed, cannot reproduce this bug anymore.

I cannot find those names in ep/src/DCMQI (d067f81c8a8e43900b91861f771013406868672f), either:

git-grep in the actual master (c4445dc0ce19d9e3b3c0bb930ee84543aed4e5b2) shows only one match:

Pushed new branch T26384-fix-misleading-inidentation.