[solved with 1.6.4 upgrad]Section Header: show in menu option not there? (1.6.3)

[Woof]

I've just uploaded the latest version 1.6.3.
Working on a new website.
I have a content type: Header Section.
I'm looking at the usual option: ACTIVE and SHOW IN MENU for SECTION HEADER, and I only have ACTIVE as an option.

Where the SHOW IN MENU option has gone?
I checked "older" website that used 1.5.4 and with content type Section Header there is always that possibility to have the Option to show or not show in menu, which I found useful as I want to create an area for a repository of specific pages (that are not accessible via a menu, but rather as internal link).

Thank you in advance,
Woof

[Woof]

Maybe I should ask:
Anybody that have installed 1.6.3: can you check if under CONTENTPAGES> edit a page > CONTENT TYPE> Section Header... do you see if you can have the options for Section Header to Show in menu or not? I know that Content can be set to Show in menu or not, but for Section Header I'm not able...

Is this a bug or a "new feature" ?
Thank you in advance!
Woof

[Dr.CSS]

You can still use it the same when it is not active, the pages under it will show in the internal link of tiny, you will have to look a little closer as they will be under the parent page above them, like if it is 3 then they show under 2 as 3.1, 3.2, 3.3, etc...

[Woof]

With the new 1.6.4 upgrade, the problem is gone. Must have been a bug in 1.6.3