I have another problem with the system tray notifications (actually, two problems). 

Firstly, whenever I mouseover the 'overflow' arrow for the notifications, it automatically pops up the overflow window - incredibly annoying and I would love to stop this so that it only pops up when I click the arrow.  Secondly, when the overflow window is open, when I mouseover one of the icons in the window, the tooltip is shown underneath the window, so is unreadable - again, very annoying !

Can anyone help me rectify this, please ?!?

Many thanks in advance for any help you can offer !