There are several problems with customized ribbon Titlebar
1. Custom title bar is not updated when main window title is changed or icon changed or when resizing the main window.
2. No system context menu for main window, namely nothing happens when do right click on main window icon.
3. Clicking on quick access bar, context menu is popped up not under it, but somewhere else for the very first time, but when sub-sequence opening of the quick access bar seems work correctly.
4. When customized titlebar height is shrink programmatically, it shows small icons, no way to change newly added action icon size.
5. Application icon is not drawn in title bar when style is fussion.