I think page's title should be assigned as the default title for the first tab, in a page split in tabs (or chapters), unless specified by the user.
For example, if user doesn't specify [title]title of first tab[/title] before the page's content and at some point we specify a new tab [newpage][title]title of second tab[/title], the summary shows up like this:
2. title of second tab
Fixed in r1095
Fixed bugs #433, #434, #435, #436, #437, #438, #443. Please read tick…
…et details for more information.