Rekordbox Video Full screen problem

Each time i use the rekordbox video, if a need to go on my computer at the same to find a video i forget to load, I lose my full screen video on my second output... when i was using serato video, this problem don't appear... So, it is not possible to go make a research on my macbook without losing the video on each TV during my set... Very upset by this, sometimes, i'm thinking to return with serato and sell my xdj...