The personal bar ULS item needs to feature WikimediaUI style guide compliant icon similar to “language” icon of 'editing-advanced'.
On multilingual wikis, such as mediawiki.org or Wikimedia Commons, the language selection is shown in the user personal bar on top.
The current language selection icon has become outdated with respect the general icon style (where monochrome icons are used) and the language icon used in newer products such as the mobile view:
The mockup below shows the new language icon in the personal toolbar:
The language icon is available in the icon repo, and their graphic assets are provided below as SVG for black and grey versions: