Currently we have the jumpbox.html templfile that is supposed to be used to include the component in all occurences within the theme.
Unfortunately there is some places where it was not done for w/e reason. Possibly conflicts within the template. It looks like the entire action bar was extracted but the actionbar is not in the same configuration across all pages.
This needs fixed to provide better consistency and avoid confusion
see disscusion on the following pr https://github.com/phpbb/phpbb/pull/5413 for more specific details.