Menus: Project Tag converted to Post Tag when same slug is used

[BrookeDot]

Steps to reproduce

1. Select a theme that supports Portfolio then create a Project Tag and Post Tag with the same slug. Let's say test
2. Starting at URL: https://example.wordpress.com/wp-admin/customize.php
3. Click on Menus > Menu Name > Add Item. Then, Project Tag > test
4. Once added you'll notice Project Tag switches to Tag in the menu.
5. Click on the menu item and be taken to the post tag.

What I expected

To have the Project Tag added to the menu.

What happened instead

The Post Tag was added to the menu

Browser / OS version

Firefox 61 Linux Ubuntu 18.04

Screenshot / Video

Video:https://cloudup.com/cVIaTBV5IuL

Context / Source

https://en.forums.wordpress.com/topic/project-type-converted-to-tag-in-menu/

#user-report

[donalirl]

Related to Automattic/customization/issues/138

[BrookeDot]

Closing as moved. In the customization repo linked above.