Post admin actions menu hidden by header on short first posts

[jomaxro (Joshua Rosenfeld)]

Noticed this today on try, confirmed that it occurs here on Meta as well. With very short topics (especially those without categories/tags), the post admin actions menu can overlap the header and be partially unusable. cc @awesomerobot

[awesomerobot (Kris)]

Исправил это, немного опустив меню администратора поста только для автора темы

UX: Prevent the post admin menu from appearing under the header on OP