Changing a menu or tag/category title with matching slugs changes both

[scottcropper]

If a menu is created with a title that matches the slug of a tag or category or vice versa they become connected in the admin. After that if either are edited they both change titles and slugs. This can easily be replicated in a fresh WP 3.1 install with no plugins.

1. Create either a menu or tag/category with the title test (slug for tag/category should be test).
2. Then create the other with the same title.
3. Change either and both will change and have matching titles.

Why would menu names be connected to an individual tag or category? The only purpose I could imagine would be in a template showing a particular tag/category of posts and grabbing a matching menu if one exists. If this is expected behavior then I think its important that this be added to the codex and the admin interface to alert the user to the other changes made.

[greuben]

Dupe of #5809

[scribu]

I would close as dup, but maybe we should treat menu creation differently from categories/tags, since the menu slugs aren't visible anywhere.

Kind of how we namespace post formats.

[SergeyBiryukov]

Duplicate: #20707 (which in turn was closed as a duplicate of #5809).