User blog comment:MisterWoodhouse/Social Activity, the 2010 Editor, and Unpausing Migrations/@comment-31417419-20201101055902/@comment-1038387-20201101200252

If something is fundamentally broken, you can contact your Wiki Manager, and if you don't have one, contact staff directly. However, if something like this happened on just one wiki, it's most likely due to local css.