maybe, this is a misunderstanding. The option "Switch over automatically" does not open the video screen. Only if the video screen is already opened - and maybe displaying a visualization - the screen is forced to display the video in this case.
To open the video screen you have several choices: Click on the blinking icon, use a timeout or, in kiosk mode use a static region or even a second monitor (or beamer
)
Best regards,
Your Silverjuke-Team