gparted has two icons when running on KDE Plasma desktop environment
As we can see in the attached screenshot, both title bar and task switcher (alt+tab)
shows an icon, the task bar shows another icon.
This occurs on Arch Linux running Plasma 5.15.5 + gparted 0.33 and Neon dev unstable running Plasma 5.15.80 + gparted 0.30.