**List of steps to reproduce** (step by step, including full links if applicable):
* open the History page of an article on fr.wiki, for exemple [[https://fr.wikipedia.org/w/index.php?title=Heather_O%27Rourke&action=history|this one]]
* open the History page of an article talk on fr.wiki, for exemple [[https://fr.wikipedia.org/w/index.php?title=Discussion:Chien&action=history|this one]]
* open the History page of a user talk on fr.wiki, for exemple [[https://fr.wikipedia.org/w/index.php?title=Discussion_utilisateur:Patafisik_(WMF)&action=history|this one]]
**What happens?**:
In all these cases, tabs on the left of the tab bar are not correctly shown in full-screen mode.
Reducing the window, all th etabs appears.
**What should have happened instead?**:
* All the tabs on the left of the tab bar, like "Article", "Discussion", or "Page d’accueil", "Page d’utilisateur", "Discussion", have to be shown always on a large windows on a large screen (as usual).
**Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc.**:
4 differents users on French Wikipedia, with rdifferents configurations.
* Last version of Firefox with U-block Origin and Ghostery, - Windows 7 Pro (last version) - 1680X1050 resolution
* (me) Firefox last version, Windows 10 Family, 2560x1440 resolution
{F35157330}
{F35157335}
{F35157337}
{F35157347}
{F35157350}
When I shrink the window:
{F35157341}
{F35157345}