Tags vs Layers

Unity Engine
1

I select a game object. Select the “Tag:” field to change it. Click “Add new tag…”
and I am presented with the “Tag Manager”. However, the tag manager is a list of Layers.

Edit → Project Settings → Tags
gives the same list.
(Also the list of premade tags: Player, MainCamera, etc does not show up in the list provided, which makes me wonder…)

Is this a bug? Or is there something I’m completely not understanding?

Thanx in advance.

2

The TagManager is used for both the tags and the layers. Notice the small triangle beside the “Tags” item. Click this to expand the Tags array and add new tags.