You mean the scroll position and/or item selection?

We could consider that. I don't think it's that common with this sort of navigation — it'd be more common with Back/Forward functionality, which we've also discussed before as a possibility, and sounds like more what you might want to use in this case. But, as one prominent example, macOS Finder does preserve scroll position (but not selection).

It's a little tricky, in that both the items and the sort field might have changed, so there's the question of what to anchor to. The naive approach would be to restore the row index and hope for the best. A more complicated approach would be to remember the selected item (if there is one) and try to get that back into view at the same position, and failing that try to scroll to the top-most visible item, and failing that maybe just fall back to the top of the list.

I've been looking for a previous/forward view button too. I'm used to it on Evernote, emacs, Obsidian and so on. Very handy when for example, you're hunting back and forth across references.

Oh my goodness... This is perhaps the single-handedly most annoying feature of working daily with Zotero. Even merely dragging a citation from one folder to another for the sake of "cleaning up" and organizing a folder proves incredibly annoying! There is no way to clean out a folder like this without landing back at the top of My Library and having to navigate down to the various folders and subfolders just to get back to the one folder/list you were attempting to organize. Please give us a back/forward button, "open in new tab," or "pin tab" feature!