Runes show new, but arent new

Hello,

I know it's just a small problem, but it's still a bit annoying.

For some time now, the rune dagger in the inventory has constantly shown that a rune is new, but no new rune is shown in my inventory. I've already moved the mouse over every rune in the inventory and even tried changing the runes, but unfortunately the display bug doesn't go away. Its almost like I have acquired a new rune which is not shown in the inventory. 

I was hoping that if I actually found a new rune and hovered over it, the bug would disappear, but even then it still exists.

It would be really good if there was a function like in the journal where you can simply deactivate items from being displayed as "new".