A user with partial permissions to a list gets Access Denied when expanding ListView grouping.
This is a bizarre bug.
- Take your basic SharePoint list, a few levels of grouping and lookups.
- List items are separated in folders in this case, which then are security trimmed to groups
- Not every member can see list items in each set
- When you expand the ListView webpart, you get an Access Denied error.
A quick fix
Thinking this is something to do with Postback, I ticked this option:
Life's good again. No idea why.
Speculate away! Let me know in the comments if this helps you in the future.