Well for what its worth, I use custom ui components and I do not have that tab. That may be from an old version. Most of the tweeks are not in yaml anyways, so that really wont help much.
Yes, what I meant by my response is that the configuration page may have been purposely removed in recent versions. But according to @mohesles1, it’s a bug in recent versions. That means you’ll have to wait for a fix.