I have a suggestion for Microsoft Edge, a Side bar feature like in Opera

When I used Opera, I really liked that feature because it had Third Party Sidebar buttons as well as the Official ones. I suggest it because when I moved to Edge, it felt some odd, and since Edge has Vertical Tabs, I'd like when Vertical Tabs get turned on, then Sidebar feature to get disabled until Vertical Tabs are off. Or just do the feature and put it inside of edge://flags

Thank you for taking time to read this discussion.