Hi, and thanks for the reply! Took me a while but I seem to have found the cause and how to reproduce it. Also just to be double sure, I did a scan and repair of my game files and reset my UI with only Dugi installed before testing this. In the guide settings under Target Button there is a setting called Fixed Mode.
I always play with this setting off and I also set my target button size to 5.0. With this off, after moving the button around and using it to target, it will shrink the tooltip font as I’ve described in my original post. Thanks!