@petebrown That's very weird. I don't use Feedbin, but I've been using Vivaldi on both Windows and Linux daily for many months and have never had anything like that. You might want to uninstall and then reinstall again and see if that helps.
@petebrown Yeah—I’m going to give that a try, as I really want to like it. It’s also the MacOS version, so maybe some differences from the other two platforms.