Buddypress title not working

Hello,

I have a problem with the theme, the page title wont work on certain page, usually the pages generated by BUddypress like on the groupe page, when you click on the group page, it doesn’t show the name of the group in the title.
Same for :

• Member page
• Group Creation page
• And way more pages that are created by buddypress

I don’t know where it comes from.

Thanks in advance for the help.