How do I erase recent documents displayed in the icon drop down menu?

I’ve tried the History Master and History manager extensions, which successfully allowed me to erase recent documents as they are displayed in the “Recent Documents” tab in the file menu; however, my recent documents are still being shown when I click on the LibreOffice icon in the task bar. It may be of note that I am using Mac OSX. I’ve included a screenshot of the menu that I’m talking about. Thank you in advance for your help!