Steps to replicate the issue (include links if applicable):
- Go to Preferences > Internationalisation and select a different language than English, eg: Spanish
- Navigate to https://test.wikipedia.org/w/index.php?title=Special:Impact/SGimeno_(WMF) to see their user impact data ( SGimeno language preference is English)
What happens?:
The pageviews url appends the impact data user (userlang=en) rather than the requesting user, Spanish
What should have happened instead?:
The pageviews url should append the requesting user language (userlang=es) rather than the impact data user, English
Software version (skip for WMF-hosted wikis like Wikipedia):
Other information (browser name/version, screenshots, etc.):