Currently running V5.4.006 on Vu+ DUO 4k open VIX. When pressing a channel number, instead of it showing on the TV screen, it shows nothing and the built in display on the Vu+ goes blank. It happened on the previous version as well. In earlier versions, it showed the number(s) of the buttons you had pressed on the TV screen. Is this a known problem or could it be one of my settings that has caused this behaviour?

Thanks.