When I try to add a new automunmberd category I have to

• go onto the new "-admin" panel into "Appearnce & Behaviour",
• than click on "Autonumbering of page" , to
• get the list of categories with autnumbering, than
• click on the button "+Add Autonumbering" , than
• enter the new category: "date-field-test" and than click on "save" or such thing, but
• ? ? ? ?

NOW I know - I have to click a second time on the button "+Add autonumbering" AGAIN to save my setup and to get the new category into the list to click on the options to chnage samething on the setup, but this is a secret at the moment!

The question is here - is it a bug of a new app, or an unwished behaviour?
I think it would be a good idea to put an extra "Save" Button to add the catgory.. this would make it clearer!