Caused by T323076
**Steps to replicate the issue** (include links if applicable):
# beta-cluster
* Visit https://ca.wikipedia.beta.wmflabs.org/wiki/Especial:GlobalPreferences#mw-prefsection-rendering and set "Enable limited width mode" as a global preference.
* Visit https://en.wikipedia.beta.wmflabs.org/w/index.php?title=Special:Preferences#mw-prefsection-rendering and confirm there is no local override
* Visit https://en.wikipedia.beta.wmflabs.org with limited width enabled. Click button in bottom right to change to full width
* Visit https://ca.wikipedia.beta.wmflabs.org
# Production
* Visit https://meta.wikimedia.org/wiki/Special:GlobalPreferences and check the box for "Enable limited width mode" to mark it as a global preference.
* Visit https://en.wikipedia.org/wiki/Special:Preferences#mw-prefsection-rendering and confirm there is no local override
* Visit https://en.wikipedia.org/wiki/Main_Page with limited width enabled. Click button in bottom right to change to full width
* Refresh page
**What happens?**:
* Limited width is still on
**What should have happened instead?**:
* Page should be full width
**Software version** (skip for WMF-hosted wikis like Wikipedia):
**Other information** (browser name/version, screenshots, etc.):
Looking at the API, a warning message is present.
This should also be applied to font size and night theme.
== QA Results - Beta
| **AC** | **Status** | **Details** |
| ----- | ----- | ----- |
| 1 | ❌ | T341278#9908014 |