The confusing active/inactive color is the biggest UI snafu in Apple software I've seen in years. It's really wrong. And: when you have just one tab, the title and the URL look similar: rounded rectangular fields at the top of the window. I keep trying to click on the title to type in a URL.
Again, it's been a long time since Apple did something this bad. "Immersive" it is not.
Again, it's been a long time since Apple did something this bad. "Immersive" it is not.