Problem running Balena Etcher on macOS Catalina 10.15.7 - Main window corrupted Graphics

I installed Balena Etcher on macOS Catalina 10.15.7. The main display window is corrupted. I downloaded the macOS install file (.dmg) from balenaEtcher - Flash OS images to SD cards & USB drives.
I opened the file in the Desktop Finder app and copied the .app to my application directory.
I opened the file and the initial main display window is corrupted with large horizontal black bars that obscure most of the page, making the app unusable.

Please disregard this post. Thanks.