Hello thewonkits, and welcome to Seven Forums.
I notice this happens when using small icons for a toolbar. If you like, you could unlock the taskbar, right click on the dotted separator line to the left of the two top far left toolbars (one at a time) click on View and Large Icons, then lock the taskbar to see if that may look ok to you. It will make the top row a bit bigger though.
Hopefully someone may know a better way to hide that bit of icon poking out when locked.