Apr 20 2021 10:06 AM - edited Apr 20 2021 11:28 AM
previously clicking on vertical tabs button would immediately switch between horizontal/vertical tab strips. now when you click on it, not right-click, but regular left-click, you get 3 options:
Microsoft Edge Version 91.0.862.0 (Official build) canary (64-bit)
Also, it's no longer called vertical tabs button in Edge settings, now called tab actions menu
Apr 20 2021 10:45 AM