NUM text on reactive buttons

[Accredo]

Hi all:

This is a little nuisance that has bugged me for a while. How can I get rid of the text <NUM> that overlays the reactive buttons in the (crafting) trade skill window.
I can disable the text on the hotbars via the hotbar settings but can not find anywhere in options or otherwise, to disable the text within the crafting window. It's really no biggie, actually it's more like a tiny pebble in your shoe... it's just annoying as hell.

I'm using DrumsUI, but in the past have used others and still had the same problem.

Any insight to this would be appreciated.

Accredo