Sometimes we have a lot of open tickets on diffrent tabs. It would be really helpfull and time saving to be able to see the ID and title on the header.  

In this example I have 3 open changes but, unless I open each tab, there is no way of knowing wich tab belongs to wich change. Sometimes I have up to 10 open tabs with incidents, changes and requests and it becomes a problem to keep track of the tabs.