The scrollbar on the MS Edge Canary should also be changed when we enable the Windows 11 Visual Updates flag with the New Windows 11 one replacing the old Windows 10 one. The new one looks more modern and aesthetically appealing.
The Win 10 Scrollbar we currently have in Microsoft Edge
The Win 11 Scrollbar in File Explorer when the cursor is not hovering over it
The Win 11 Scrollbar in File Explorer when the cursor is hovering over it
If you liked this suggestion and want to make it part of Microsoft Edge, I suggest you to send feedback about it through the in-app feedback tool (Alt+Shift+I) in Microsoft Edge to give this suggestion a +1.