I am working with a series of courses using the same player. Some courses have glossaries, others do not.
In a course that does not have a glossary, I have tried turning off the Top left tool bar, saving or saving as "No Glossary [for example]. When I turn off in the player tools, the Glossary label goes away in the preview [under the course title.] When I save the change the "toolbar left glossary label" reappears.