I have just checked, how icons of Wine apps are displayed in KDE taskbar. I added icon to desktop and started program. In taskbar appears correct icon of application, not default Wine glass icon. After that I tried to repeat this action in Gnome 3 shell: icon is wrong.
So I think this issue is related to Gnome environment.
I have just checked, how icons of Wine apps are displayed in KDE taskbar. I added icon to desktop and started program. In taskbar appears correct icon of application, not default Wine glass icon. After that I tried to repeat this action in Gnome 3 shell: icon is wrong.
So I think this issue is related to Gnome environment.