I am using the remote URL to cast a screen to a chromecast connected to a projector. Projecting work fine however when I try to use the "blank screen" button the screen does not change it simply keeps the slide up. I have tried this with 2.4, 2.4.6 and 2.9.5 and they all behave the same. Is there a way to blank the main live view in the remote web browser view?