[Pharo-project] implementors of

In the system browser I have PRAjaxSearchWidget>>renderContentOn: selected. When I hit the "implementors" button, or when I highlight a method name in the body of renderContentOn: and hit alt-m, I only get implementors of renderContentOn:. Is it supposed to work this way? Is there a convenient way to get a list of all the methods in body of renderContentOn:, and pick one to see its implementors (as in vanilla squeak, at least 3.10). I'm working with Pier-1.2.app.zip downloaded a few days ago from the Pier site. Running on Linux. Thanks. Ross