If I open an instance of Windows Explorer, a button appears on the taskbar; its icon matches the icon of current location in Explorer. E.g. If I've clicked on a drive (e.g. C:) then the taskbar icon changes to the drive icon. If I select the Pictures Library location, the taskbar icon changes to a little picture symbol.
How can I stop this behaviour, so that the taskbar icon always shows the same icon, regardless of where I've clicked in Explorer?