Safari "Phantom" tabs. Disappearing tab in safari

There have recently been many reports of a broad range of new problems on this support site about the latest release of Safari v15. It is included in the downloads for Big Sur and Catalina. If you are experiencing these problems, you can use another browser such as Firefox or Chrome and they will work for you until a newer version of Safari is released.

I have read here that Apple's support people have a link to reinstall Safari and that doing so often fixes the problem. You might check with them.

I'm experiencing this problem as well since installing Safari 15. Sometimes it helps to drag out a tab and drag it back in.

But this shouldn't happen at all, of course.

@Matty Vee: Did you find a fix?

This suggestion was very helpful. I agree it should be unnecessary but at least now I do not have to close tabs to get to the phantom ones. Thank you.