With the 3.80 new firmware on my Cerbo GX and Touch 50, even when I select the overview screen as the default and the return to page after time out, for some reason it keeps going back to the brief screen.
I assume it’s a new issue as I never had a problem before keeping the overview screen as the default.
I too am experiencing the same reluctance to recognise the setting of Overview as my default screen since updating to firmware 3.80 on my Cerbo-S GX when viewing via a Touch 50 display. Console via VRM appears to be unaffected as it still reverts to Overview.