Child items of top-level menu items are appearing in the treenav changelist as if they were actually children of a different menu item, and all the trees are sort of mingled together. I assume this has something to do with the Django admin sorting by only one field at a time? Is there any way to fix it? If I can figure out how I'll try to attach a screenshot of the issue.
I believe this is related to a bug in MPTT which is fixed on master. You can find some more detail in this previous issue: #2 (comment)
Ah. Apologies for the duplicate, then.