The introduction of vertical tabs aimed to maximize viewable screen space while web-browsing. While this idea is achieved well in full-screen mode, the split screen experience falls short. In the current layout, each secondary window displays its own tab bar in the center of the screen. This significantly reduces viewable content area and creates an unnecessarily large visual barrier between the two windows, making split-screen mode unnecessarily frustrating to use.
Suggested improvement: Consolidate all tab groups into a single shared sidebar. Because vertical tabs have a much smaller footprint than horizontal ones, a single sidebar has ample space to display tabs from multiple windows simultaneously. This change would reduce screen clutter, eliminate the central divider problem, and make split-screen browsing far more practical.
Thank you for your consideration.