Well it was worth a shot, so I downloaded a new game rom and poof the image came up, then I removed a couple of ROMS from the arcade folder and re-added them and did the whole re-scan, and poof the icon images of those games came back on. It’s clearly something in the update but to get around it and until they address it , copy and remove all the games and re-add them again and refresh/rescan polycade (F5 on keyboard)