Redraw problem of TabbedContainer

Hello,

since using XTP v10.4.1, I realized that tabbed containers are not redrawn properly when opening/closing one of its panes from code several times. The pane opened/closed simply remains closed/opened (visually only!) until I resize the mainframe.

Take the PaneSample of v10.4.1 and modify CMainFrame::OnShowPane() like this:

void CMainFrame::OnShowPane(UINT nID)
{
    CXTPDockingPane* pPane = m_paneManager.FindPane(nID);
    if (pPane->IsClosed())
        m_paneManager.ShowPane(pPane);
    else
        m_paneManager.ClosePane(pPane);

}

Launch PaneSample and organize the panes just like this:



The code changes in OnShowPane() will allow us to use menu item "Docking Pane" --> "Panes" --> "Pane 6" to close pane6, the to re-open it, close it again, etc.

If I do it several times, suddenly Pane6 does not disappear when it should go away or it does not appear when it should become visible. Sometimes, I get even half-redrawn tabs in seldom cases. It looks then weird:



If I resize MainFrame just a little bit, every tab gets repainted correctly at once.
I did not experience this problem with older versions of XTP.
Can this be avoided/fixed somehow?

Thank you, in advance!

Thank you for the information, I will check it out.