To get the dialog:
- Open WD.
- Put any element to the scene.
- Turn on the WD debugger in the UGENE settings (WD tab) if it is switched off (by default).
- Click to the "Show or hide breakpoint manager" button on the toolbar.
- Select any element on the scene and click "break at element" button on the main toolbar or on the breakpoint manager's toolbar.
- Double click to the "hit count" field of the breakpoint list's entry.
It looks worse on Mac OS X than on other systems. Try to resize the dialog.