I did a little research into the development of this new display of vertical tabs, and it looks like the current values are supposed to be present - at least according to the screenshots shown in this issue - the one that got committed.
Perhaps they were forgotten, or removed later for some other reason?
User interface changes
|#48||Tested in Microsoft edge.jpg||40.01 KB||jaspreetsingh31|
|#48||Tested in FireFox browser.jpg||49.22 KB||jaspreetsingh31|
|#48||Tested in Chrome browser.jpg||51.78 KB||jaspreetsingh31|