The new preference option, **[[ https://translatewiki.net/w/i.php?title=MediaWiki:Monobook-responsive-label/en | MediaWiki:Monobook-responsive-label ]]**, has [[ https://translatewiki.net/w/i.php?title=Special:Translations&message=MediaWiki:Monobook-responsive-label | already been translated to many languages on translatewiki.net ]].
However, it seems like l10n bot does not import these translations to the software.
Steps to reproduce:
# Go to [[Special:Preferences]] on any Wikimedia wiki.
# Change your skin to MonoBook (if you don't have it already set).
# Save your preferences.
# Change your interface language to Hebrew (he) or German (de) or any other language to which the new preference option is already translated.
# Go to the second tab in your preferences.
# You should see "Enable responsive MonoBook design" instead of the translated label.