GtkTreeView doesn't refresh

[Jarosław Sobieszek <j sobieszek neo pl>]

Hello,

I'm trying to dynamically modify list based on some action. Program below
should add 3 rows at the top and 3 rows at the bottom of the list for every
click of the button. For some reason it doesn't work - I'm seeing partial
updates with random amount of data (only 2 top rows on first click, then 5
at the bottom, on 3rd click the list looks ok (9 rows added at the top and
9 rows added at the bottom)). I've tested this under gtk2 and it works ok.
Am I missing something or is it a bug in gtk3 (gtk3-3.8.6 under Fedora 19)?

Thank you,
Jarek

--- test_list.c ---

#include <gtk/gtk.h>

void on_click(GtkButton *b, gpointer data) {
        GtkListStore *store = GTK_LIST_STORE(data);
        int i;

        for (i = 0; i < 3; i++) {
                GtkTreeIter it;
                gchar entry[256];

                gtk_list_store_prepend(store, &it);
                g_snprintf(entry, 256, "olleH%d", i);
                gtk_list_store_set(store, &it, 0, 321, 1, entry, -1);
        }

        for (i = 0; i < 3; i++) {
                GtkTreeIter it;
                gchar entry[256];

                gtk_list_store_append(store, &it);
                g_snprintf(entry, 256, "Hello%d", i);
                gtk_list_store_set(store, &it, 0, 123, 1, entry, -1);
        }
}

gboolean on_delete(GtkWidget *w, GdkEvent *e, gpointer data) {
        gtk_main_quit();
}

int main(int argc, char *argv[]) {
        GtkWidget *w;
        GtkWidget *box;
        GtkListStore *store;
        GtkCellRenderer *renderer1, *renderer2;
        GtkTreeViewColumn *column1, *column2;
        GtkWidget *tree;
        GtkWidget *b;
        int i;

        gtk_init(&argc, &argv);

        w = gtk_window_new(GTK_WINDOW_TOPLEVEL);

        box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
        gtk_container_add(GTK_CONTAINER(w), box);

        store = gtk_list_store_new(2, G_TYPE_INT, G_TYPE_STRING);
        for (i = 0; i < 10; i++) {
                GtkTreeIter it;
                gchar entry[256];

                gtk_list_store_append(store, &it);
                g_snprintf(entry, 256, "Entry %d", i + 1);
                gtk_list_store_set(store, &it, 0, i + 1, 1, entry, -1);
        }

        tree = gtk_tree_view_new_with_model(GTK_TREE_MODEL(store));

        renderer1 = gtk_cell_renderer_text_new();
        column1 = gtk_tree_view_column_new_with_attributes("Num", renderer1,
"text", 0, NULL);
        gtk_tree_view_append_column(GTK_TREE_VIEW(tree), column1);

        renderer2 = gtk_cell_renderer_text_new();
        column2 = gtk_tree_view_column_new_with_attributes("Entry", renderer2,
"text", 1, NULL);
        gtk_tree_view_append_column(GTK_TREE_VIEW(tree), column2);

        gtk_container_add(GTK_CONTAINER(box), tree);

        b = gtk_button_new_with_label("Click here");
        g_signal_connect(b, "clicked", G_CALLBACK(on_click), store);
        gtk_container_add(GTK_CONTAINER(box), b);

        g_signal_connect(w, "delete-event", G_CALLBACK(on_delete), NULL);
        gtk_widget_show_all(w);

        gtk_main();

        return 0;
}