[WARNING] [theme] Directory with themes was not found! Report the issue to package maintainer(s). [INFO] [theme] CSS failed to load from: “/var/lib/snapd/desktop/nomacs/Image Lounge/themes/Light-Theme.css”
LOL, that folder doesn’t exist. Just installed with Flatpak, and now it works again. The only image viewer I like in Linux.
No theme, makes it not work correctly, you have to wait or click to load the image, zooming in doesn’t work, going to the next image, and you still have to click it and crap to make it work. Not worth anybody’s time.
I finally investigated the problem properly. There’s a bug report on their Git, somebody using the AUR package, had the same problem.