Wt

Hello! I need to implement a model for hierarchical tree data so I use WAbstractItemModel and reimplement necessary methods.

All works fine besides removing rows. I call beginRemoveRows() then remove data from model and call endRemoveRows. But after this selection of nodes in WTreeView causes a segfault and/or selection bugs: nodes on which I clicked do not become selected in WTreeView (blue background in bootstrap theme). If instead I just use reset() after removing data from model all works fine, but the problem is WTreeView unexpand all nodes which is critical to me.

I tried absolutely same model in Qt with analogical reimplementation and it works fine both ways (with begin/end remove rows and full reset), so I think there is some bug in WAbstractItemModel.

I attach files of my test project. You can select node in WTreeView, press button to delete node and than try to select other nodes in tree and watch what happens.