@Tetsuo Shima - I'm seeing the same black bar mentioned in the last 2 comments - specifically, it's the submenu, and it's still functional (as in you can click through it to get to, say, the wii games) - but you cannot see what you're clicking on; it's just a horizontal black bar where the menu items should be rendered
if you review the images from your initial post (back on page 1), the 2nd & 3rd images on the top row show the wii menu & retro consoles menu - I cannot post with links
in the wii menu, the submenu consists of the 'back arrow' image, wii, & gamecube
gbatemp.net /attachments /sep-14-2020-00h03m37s-png.224784/
in the retro consoles, the submenu shows the sega genesis, etc
gbatemp.net /attachments /sep-14-2020-00h06m59s-png.224787/
so - imagine, if you will, that is just a black bar ... what could be done to troubleshoot this?
---
apparently, I need to update - ran through wiiflow setup from the justin case youtube video -
and it bundled 5.4.6 - just noticed some comments from that video mentioning this problem & updating is the solution
if I don't reply or edit this comment further, assume that fixed the problem