The element "mw-fr-revisiontag" at the top of the page uses the class "nomobile" to apparently hide it on mobile. This class is not defined at least in any of the default skins shipped with Mediawiki.
If you are viewing an unreviewed page on mobile, the content is interrupted by this element because the element is shown because the class has no effect.
I propose to use a method that is available in the default skins or the custom css of the extension to ensure the element is hidden on mobile.