The protection tab label is now always "change protection settings for this page", even if the page isn't protected. Previously the label would be "protect" if the page was not protected, and then "change protection settings for this page". I think this is a regressoin from 4776bed220a0c03647131804af26b53f6f7accdc / T301203: Update skin-specific menu labels to be more predictable, intuitive with better default values.
The longer text both takes up a bunch of space as well as making it harder for admins to quickly at a glance see if a page is already protected.