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Crash on moving data nodes
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Moving a data node inside the datamanager leads to a crash of the workbench.
Confirmed on Ubuntu 14.04

Event Timeline

The crash occures when calling the method beforeRemoveRows. First suggestion is, that the new implemented QmitkDataStorageProxyModel should react on the signal rowsAboutToBeRemoved()which is emitted by beforeRemoveRows inside the QmitkDataStorageTreeModel.

I assume this is a duplicate of T17795, which in turn could be a duplicate of T17534

The problem does not occur on c9776ad3 - before usage of predicates has been removed in TreeModel.

It seems I erred and this bug is instead the same as T18025.