I agree with the parent about the sidebar. I already disliked the change to make it hidden by default with the pin option since it was a bit inconsistent for me, but it at least gave the option for best of both worlds.

Ideally this should be an option. I get that 'modern UX' is all about more screen space and whatnot, but I'm not a fan of that trend personally. It seems that all that's been gained from that change is more empty space at the side of pages. Personally, I'm the type that would rather have more information and convenience on the page than extra space.

Would it be that hard to add an option to enable the side bar if people want it? That's what I like about GitLab, that it's very configurable.