I use the excellent YzDock as the launcher on my desktop. There is a shortcut to it in the startup folder. It is set to ‘Always on top’. It appears at boot, then I open Firefox/Thunderbird and it does not stay on top. If I minimise the two apps, then right-click the dock, uncheck the ‘Always on top’ option then recheck it, the dock will stay on top. Any ideas why it won’t stay there as it should?