Hi,
I've reported this on RC1 but it still happens on RC3. RPi 3B+, 64GB SD card, 3A PSU, 8bitdo controllers.
Hiding the last game in a system crashes ES (black screen).
For example, with just the default games there is only "Flower" in the amiga600 system. Press SELECT -> Edit metadata -> Set Hidden to ON -> SAVE. The interface crashes and shows a black screen or sometimes the Recalbox loading picture.
Support archive: https://file.ac/vXz7zA5abSA/
I guess a system where all the games are hidden should be treated the same as a system that has no games at all and skip to the next one.
Cheers
(edit: pardon, par habitude j'ai posté en anglais sur ce sujet en fançais)