How can we eliminate the gap between the address bar and the sidebar?

[chlorine3545]

Hello everyone.

After updating my Zen to 1.0.1-a3, I notice a gap between the address bar and the sidebar in my current setup. While some people might appreciate this design, it's not quite to my taste. I've attached a screenshot for reference.

Does anyone know if there's a way to eliminate this gap or adjust the layout for a cleaner look? Any tips or guidance would be greatly appreciated!

Thank you!