@eht16 commented on this pull request.
{
- GtkTreeModel *filter_model = gtk_tree_view_get_model(GTK_TREE_VIEW(global_kb_data.tree)); - gtk_tree_model_filter_refilter(GTK_TREE_MODEL_FILTER(filter_model));
`gtk_tree_model_filter_refilter` seems not necessary anymore, so I removed it.