[support] Expose filter node type

Hi all. I have a view with an exposed filter of type "node type". I have check what type of node I want to use (say my_content1 and my_content2) and I have check that the only items presented to the user will be the ones selected (my_content1 and my_content2). My only field is node's title (linked to its node).

When I load the view's page (so without choice the content type my_content1 or my_content2) I see all nodes' title of all nodes type (blog, page, story, my_content1, my_content2). So I have add again a node's type filterl, choice the same content type (my_content1 and my_content2) but without exposing it. And now it works like a I want.

But why this ? Is this normal ?

Tnx.