[TYPO3] TCAdefaults.pages.hidden=1 doesn't hide pages

[Bing Du]

Hello,

TCAdefaults.pages.hidden=0 was set for a backend group.  Now I change it 
to 1.  I've also verified TCAdefaults.pages.hidden=1 is set for every 
members by checking Tools->User Admin->TSconfig.  However, the 'Hide 
page' checkbox is still not checked automatically when a group member 
creates a new page.  Anything else need to be done to make the change 
take effect?  I 've also cleared all the caches to no avail.

Any help would be appreciated.

Bing