Fixed in the next release. This was due to a phrase collision. The phrase vw_protect_title is used for "Title" in the AdminCP global protection settings; while the expected front-end vw_protect_title was used for "Protection Settings" as a heading for the Protect tab. In vBulletin this was not a problem, but XenForo does not distinguish phrases based on their usage, only by their phrase-names. This was fixed by renaming the front-end version of the phrase to the unique vw_protect_settings.