In https://en.wikipedia.org/wiki/Special:EditWatchlist there is inconsistent capitalisation in English, " (talk | history | User contributions)" when you have a "User:Name" in the list.
"User contributions)" comes from "contributions" https://translatewiki.net/wiki/MediaWiki:Contributions/en
https://translatewiki.net/wiki/MediaWiki:Contributions/qqq - "shown in the sidebar menu"
So inside the watchlistedit string is a word with a first capital letter
There must be another message "user contributions" with first small letter