Screen issues

[Ms-Ajith]

Hello ,
I would like to point out and ask for problem which I face while using Gooey. Iam attaching the widget_demo.py code in the attachment. The issue I face is whenever minimizing and maximizing the GUI it leaves the mark or make the screen blurry. Why is it so? What should I do for that. Screenshots with the issues is also attached here.

First screenshot - Whenever drop down list goes below the GUI, it leaves a shadow.
Second screenshot - After maximizing the initial cancel start button leaves a shadow.

Thanks and Regards
Gooey.txt