As title states. I'll attach an image as an example.

I have a fixed version here: https://github.com/aurelion314/mega-macro

If you want to do it yourself, its as simple as adding a size tag after line 14 in mega-macro.window.xml
It should look like this:

<FontString name="$parentName" inherits="GameFontHighlightSmall" text=""> 		
<Size x="36" y="36"/>

Please create a pull request with this and any other fixes you've made.

Note that a few days ago another fix was merged in so make sure there's no conflicts.

Unfortunately I forgot about this tweak and ended up committing it along with some bigger changes that shouldn't be merged until I can test them more. I'll play with it for a day or 2 (its the weekend after all) and see if it is stable first.