When developing an application, I do not know why, but the Application icon on the left side next to the App name, is not showing for me. I have done several different iterations of name for FontAwesome icons, and none of them show up. I do not know what is wrong. Here is my code and a picture:

Application.php

/**
     * [Node] Get Icon for tree
     *
     * @note	Return the class for the icon (e.g. 'globe')
     * @return	string
     */
    protected function get__icon(): string
    {
		//none of these work, no matter what name I put....
        return 'sticky-note';
        return 'house';
        return 'thumbs-up';
        return 'cloud';
        return 'comment';
    }

What am I doing wrong?

get__icon is used for the application icon on the applications list!

What you're asking here is managed via the language system. menutab__tabname_icon ( replace tabname with your tab name )

Ah!! Gotcha! 😁 Thanks for the tip! 👍