Steps to replicate the issue (include links if applicable):

1. Set Language preference in the global preferences/local exception to en.
2. Visit id.wikipedia.org

What happens?:

Interface language follows the preference setting.

What should have happened instead?:

Interface language does not follow the preference setting.

With global preference:

With local exception:

Software version (skip for WMF-hosted wikis like Wikipedia):

1.41.0-wmf.16 (7a7eb2d)

Other information (browser name/version, screenshots, etc.):

Safari 16 on macOS 13.