Thanks, that did the trick
Joe Lusk
Windows Version 1903 (OS Build 18362.1016) Curtains version 1.01 The primary offender is a tool our company uses; Autotask.net. Perhaps it is the way that it spawns new windows, however the issue does not happen when curtains is disabled.
In the left side of the title bar of some of my windows, specifically chrome pop-ups, there is a left pointing arrow and a small box with a gear in it. After I close the windows these items stay on my desktop. I cannot delete them or interact with them, though they highlight on mouse-over. By the end of my work day there are tons of these. If I change the curtains theme it cleans them up. They also only highlight on the title bar, they do not react to a click
Since the most recent upgrade all of my dialog boxes have the fonts transparent on buttons. This also applies to the system clock. Here is an example of what I mean; https://i.imgur.com/VDp05En.png