Hello Michael, and welcome to Seven Forums.
I've been playing with this, and I can't even get it to show 3 rows in QL with the taskbar set to double height. Only if the taskbar was set to triple height.
If you like, a workaround would be to unlock the taskbar, drag the dotted line separator to the right of QL over to the right just a bit until all small icons in QL show without the expansion double arrow, then lock the taskbar.