Manual:$wgVectorResponsive

Skins: $wgVectorResponsive
Make Vector more responsive.
Introduced in version:1.26.0 (Gerrit change 220667; git #cec2337a)
Removed in version:Still in use
Allowed values:(boolean)
Default value:false

Details

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Improves the user experience for the Vector skin on low-resolution displays. Essentially places the navigation menu below the content, instead of to the side of it. Also hides the logo, as there's no space left for it.

Since 1.36, the setting only works in Vector-2022. Since ?.??, the setting doesn't do anything, (vector-2022 is always responsive, and vector is never).