Just unpin/hide it.
This reply is so low effort and so invalid, I am surprised it's coming from a moderator.
A function that was in by default, automated and served a legitimate purpose has been removed, and you are suggesting we recreate it's function manually, that's the text book definition of regression, downgrading.
If that's the case, why not just switch to Vivaldi altogether, if I have to manually fiddle w/ the side bar, I can do that and much more in Vivaldi.
All the missing features can also be implemented as addons/extensions, and at which point why use Opera?
I have been using this browser for over a decade, I have always recommended it to everyone around me.
The main reason I have used it was it's customizability, ease-of-life / quality-of-life features and it's willingness to progress and innovate. It's a shame that the very user base that popularized it are being ignored.
I wonder how many thousands of people are really annoyed at this change but won't say a thing about it and eventually just switch...
I have been test running Vivaldi for a while (since the sidebar change), I have few reasons to switch, but this sidebar thing is my tipping point, along w/ the attitude I am seeing by staff.