[SOLVED] RibbonBarItemButton do not change .Pushed state visually correctly.

Change from Pushed = true to Pushed = false leaves button visually in pushed state. button.Update() does not help, only reload page in browser.

sample code:

ribbon = new RibbonBar();
Controls.Add(ribbon);
var page = new RibbonBarPage();
page.Text = "PushTest";
var grp = new RibbonBarGroup();
grp.Text = "push test group";
var button = new RibbonBarItemButton();
button.Text = "push me";
button.Click += (sender, args) =>
{
button.Pushed = !button.Pushed;
button.Text = button.Pushed ? "pushed" : "released";
};
ribbon.Pages.Add(page);
page.Groups.Add(grp);
grp.Items.Add(button);