To reproduce: - Add two tabs in a PageView - Add RadRichTextEditor in the second tab - Select some text to show the mini toolbar - Select the first page. Workaround void radPageView1_SelectedPageChanged(object sender, EventArgs e) { if (radPageViewPage2.IsContentVisible == false) { radRichTextEditor1.RichTextBoxElement.SelectionMiniToolBar.Hide(); } }