Steps to replicate the issue (include links if applicable):
- Install Citation Watchlist
- Visit https://en.wikipedia.org/w/index.php?title=User_talk:Cyberpower678&action=history&useskin=vector
What happens?:
- Intermittently, most diffs have a red exclamation mark
- Hovering over the exclamation mark reveals wikipedia.org
- Checking an example diff, it has no URL in it
What should have happened instead?:
- No exclamation marks for diffs without a URL containing a bad source
Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):
Other information (browser name/version, screenshots, etc.):
