suggestion (bug_risk): Reconcile get_content_obj with the new _current_contents prefetch.

The queryset now prefetches the reverse relation twice: into _prefetched_contents (all admin_manager contents) and _current_contents (admin_manager.current_content), but get_content_obj still only uses _prefetched_contents via get_latest_content_from_cache(..., include_unpublished_archived=True). This both negates the benefit of the more selective _current_contents prefetch and changes behavior to always include unpublished/archived content when a cache exists. If this method is meant to return the current content, consider using _current_contents instead, or otherwise make the selection between _prefetched_contents and _current_contents explicit and intentional.

Suggested implementation:

    def get_content_obj(self, obj):
        """
        Returns the "current" content object that belongs to the grouper.

        Priority:
        1. Use the `_current_contents` prefetch (admin_manager.current_content) when available.
        2. Fall back to the cached lookup, which in turn uses `_prefetched_contents`
           if that prefetch was done, or hits the database otherwise.
        """
        # When the changelist queryset has prefetch_related(... to_attr="_current_contents")
        # this will be a list-like of the current content(s) for this grouper.
        current_contents = getattr(obj, "_current_contents", None)
        if current_contents:
            # `_current_contents` should contain at most a single object, but we
            # defensively take the first element.
            return current_contents[0]

        # Fallback: use the existing cache-based helper, which may rely on
        # `_prefetched_contents` if it has been prefetched.
        # We intentionally do NOT force `include_unpublished_archived=True` here so that
        # the helper’s default behavior (usually "current" or "latest" valid content)
        # is preserved unless explicitly requested elsewhere.
        return get_latest_content_from_cache(obj)

This edit assumes that:

1. get_content_obj currently exists exactly as shown in the SEARCH block and that get_latest_content_from_cache accepts a single obj parameter (with include_unpublished_archived either optional or defaulting appropriately).
2. The queryset you showed is on the admin changelist for the same model whose instances are passed to get_content_obj, and that _current_contents is the to_attr used in the new Prefetch(...).

If your existing get_content_obj or get_latest_content_from_cache signatures differ (for example, if get_latest_content_from_cache requires the admin instance or the content model, or if include_unpublished_archived must be passed explicitly), you should:

• Adjust the fallback call accordingly, e.g. return get_latest_content_from_cache(self, obj) or keep include_unpublished_archived=True if that is the intended behavior.
• Ensure the Prefetch(... to_attr="_current_contents") remains aligned with the attribute name used in get_content_obj.

issue (bug_risk): Prefetched-path lookup ignores extra grouping fields, which can return content for the wrong language or group.

In the non-prefetched path you filter by extra_grouping_fields (language, site, etc.) before selecting content, but when _prefetched_contents is present you just return the first draft/published/archived item from the cache without those filters.

If _prefetched_contents can contain multiple languages or other groupings, this may return the wrong item. You could either:

• pass extra_grouping_fields into get_latest_content_from_cache and filter there, or
• restrict prefetched contents so they only include the relevant grouping.