I installed the Battle.net Launcher under Lutris and everything worked great. Battle.net starts and World Of Wacraft runs without any problems.
I only have one problem, the start icon on the screen is not displayed correctly and it doesn’t look very nice now. It looks like a document page. Is there a solution to fix this?
The solution I shared applies to game icons in Lutris, not to desktop icons.
To change desktop icon I think you’ll need to open the desktop file with any text editor and set path to custom icon.
If there is no Icon= entry add it and specify path to icon.