I have noticed the following problem on English Wikipedia:
- Go to a page which is semi- or full-create-protected, e.g. https://en.wikipedia.org/w/index.php?title=Zach_hart or https://en.wikipedia.org/w/index.php?title=Pagename respectively
- Be logged in to an admin account
- In the dropdown menu (vector) or option tabs (monobook) the message "protect" instead of "change protection" is displayed.
The underlying issue is that the MediaWiki messages vector-action-protect (resp. monobook-action-protect) is used instead of vector-action-unprotect.
Curiously the correct message is displayed for extended confirmed- and template-protected pages, e.g. https://en.wikipedia.org/w/index.php?title=Template:TD and https://en.wikipedia.org/w/index.php?title=Kaajal_Naskar&action=edit. Perhaps the relevant code wasn't update when these new levels were introduced?
I have not investigated other skins but I would not be surprised if they have the same problem.