**List of steps to reproduce** (step by step, including full links if applicable):
* Go to a [[ https://en.wikipedia.org/wiki/Cardiff_City_F.C._2%E2%80%931_Leeds_United_F.C._(2002) | page with only a single language ]]
* Scroll down the page until the sticky header appears
**What happens?**:
Language switcher appears with "0 languages"
**What should have happened instead?**:
No language switcher appears
**Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc**:
https://phabricator.wikimedia.org/F34909440
See https://phabricator.wikimedia.org/T297362 for related task
= AC =
- When an article is not available in any other languages, do not display the language button
- Language button doesn't show when language in header is not enabled (i.e. Wikicommons)