Hey, this browser is a great tool to replace any of the others on macOS and iOS though it is still in beta and needs some improvements and polishing.
My suggestion is to move the search tab (address bar, idk?) closer to the keyboard, Safari is a great example of it. (Screenshot 1, Screenshot 2)
I am using the "Ergonomic" theme as my main in the "Appearance" setting and by default, when you are not typing something in a Search Bar it stands at the bottom. (Screenshot 3)
But when I am searching it flies on top of the screen. Personally, am finding this uncomfortably for eyes. And I thought it would be better to redesign it.
I made something similar (very rough and quick for example) and you can see it in Screenshot 4.