Here's another image of the same bug. I did a whole run in between these two with no problems.

The bug did not occur ON an action, rather, it occured as my mouse either entered the gameplay-window/box or left it, or even possibly just mousing over something in that game window. But it definitely did not occur after a "click" event.
In addition, this also shows my text bug. As you can see, most of the text on the item is just fine, except for that one line where it says "free desecration" sort of smushed together/cut off. This same effect happens in town when prepping a mission. If I highlight a character class, some of the text is like this. This doesn't occur on the race options, possibly because they have only 2 lines of text.