If the feature or scenario requires custom browser configuration, it should be tagged @custom-browser. This convention is currently not used. At the moment we tag features or scenarios that need custom browser configuration with @language tag in UniversalLanguageSelector repository and with @user_agent tag in MobileFrontend repository.
https://www.mediawiki.org/wiki/Manual:Coding_conventions/Selenium#Optional_tags
Version: wmf-deployment
Severity: normal