Wikimedia Bugzilla is closed!

The toolbar (above the edit window) was at some point disabled for the Safari browser by a change to skins/common/wikibits.js (probably by the 
change from Revision 1.14 to 1.15).

Current Safari versions handle the toolbar functions pretty well so it should be re-enabled for Safari.

Proposed fix:

The function addButton in wikibits.js contains:

 if (!document.selection && !is_gecko) {
  return false;
 }

The first of these lines should be replaced by

 if (!is_safari && !is_gecko) {

(Since that code is executed when a page loads, document.selection might always be undefined)