Steps to replicate the issue (include links if applicable):

• add the line

mw.loader.load('//en.wikisource.org/w/index.php?title=User:Inductiveload/MiniPane.js&action=raw&ctype=text/javascript');

in common.js for your username on English Wikiosurce.

• Click Edit tag for a Page:namespace page

What happens?:

Minipage functionality does not engage when moving over the edit portion of the UI, no mini-page display shown, with no option to enable/disable shown in sidebar menu.

What should have happened instead?:

Minipage should have displayed it's popup display, along with a menu option to enable or disable the functionality required.

Software version (skip for WMF-hosted wikis like Wikipedia):

Other information (browser name/version, screenshots, etc.):