TYPO3 Core

On opening the link wizard the field title gets a default value for the current kind of link (normaly 'page', so 'link to internal page'). after selecting another kind of link (e.g. external URL) the value of of the title field is kept from the previous tab.

After clearing the field and selecting another kind of link the default value for that kind of link is inserted and kept on further changes.

In earlier versions the default-text changed according the selectes kind of link. in 7.6.14 the value is kept. this might be useful for an individual set title, but the usage propably is low. (how often do you change a kind of link after the initial setting?)

More often an editor opens the link wizard, which starts with the internal link (and so the text for internal link) and selects that kind of link which is needed. then he selects his target (and might adopt the default title to an individual title). but according to older versions of TYPO3 he might ignore the (wrong) value title assuming it will match the current kind of link.