Why two sidebars instead of one?
I've started using Opera since a long time and I'm delighted with the IM features on the new side bar. But i don't understand why the extension sidebar is still alive. It is so redundant to have two sidebars which do more or less the same things...
What I'm suggesting is that you should consider integrating the extension sidebar into the main sidebar. It would be nice.
I thought it would work that way, but it just creates two sidebars and that really looks stupid and eats huge chunk of the screen. I think they didn't think this through when they added sidebar as default in Opera 45.
You can turn off the extensions bar from the View menu.
I don't want to turn off the extensions bar, I like his functionality. But having a main sidebar, it has no sense to have a separate extension sidebar