it works with JS disabled suggesting to me this is an issue in UniversalLanguageSelector.

I think the problem here was caused by d39b5c958a28fb5c ( T316559)

The button now has the class mw-interlanguage-selector-empty rather than mw-interlanguage-selector which means ULS's code does not kick in.

Either Vector 2022 should add both classes (mw-interlanguage-selector-empty and mw-interlanguage-selector ) or ULS should be updated to wire up the mw-interlanguage-selector-empty button here:
https://gerrit.wikimedia.org/g/mediawiki/extensions/UniversalLanguageSelector/+/ed96dabcdda9dc444290daa880a8a933d45c1c5e/resources/js/ext.uls.interface.js#211

Change 946966 had a related patch set uploaded (by Abijeet Patro; author: Abijeet Patro):

[mediawiki/skins/Vector@master] Display ULS vector-dropdown-content when on non-content pages

https://gerrit.wikimedia.org/r/946966

Change 946966 merged by jenkins-bot:

[mediawiki/skins/Vector@master] Display ULS vector-dropdown-content when on non-content pages

https://gerrit.wikimedia.org/r/946966

Status: ✅ PASS
Environment: Beta
OS: macOS Ventura, Windows 11
Browser: Chrome 116, Firefox 115, Edge 115, Safari 16.6
Device: MBP
Emulated Device:Windows 11 Edge from BrowserStack
Test Links: See AC1-3

*Issues are separate from task as mentioned from Jdlrobson.*

With JS enabled and JS disabled check the behaviour of the language button on

✅AC1: https://en.wikipedia.beta.wmflabs.org/wiki/Wikipedia_talk:Questions
Extra padding only in Chrome when it's No JS

Chrome	Safari, FireFox, Edge

The keyboard focus outline is darker and the Hover color is lighter on Wiki Talk than the other links.

Wiki Talk	Conflict/Language_test

✅AC2: https://en.wikipedia.beta.wmflabs.org/wiki/Conflict-title-0.14552623888152905-I%C3%B1t%C3%ABrn%C3%A2ti%C3%B4n%C3%A0liz%C3%A6ti%C3%B8n
✅AC3:https://en.wikipedia.beta.wmflabs.org/wiki/Language_test

When zooming in and out on Wiki Talk link, the language box just zooms in and out
When zooming in and out on Conflict and Language_test links, the language box moves all over the place

In T342845#9082279, @Jdlrobson wrote:

@abi_ please see detailed QA. I don't think any of this relates to the originally reported bug, but you may want to create some new tickets based on the outcome?

Agreed, I'm inclined to close this task once QA on production is done and create other tasks for the issues identified during QA. I've created the following tasks:

1. T344055: Language dropdown has extra padding in Chrome on non content pages
2. T344053: Zooming in/out makes the language selector dropdown move around

@abi_ Before putting this as resolved, what do you think about the questions below?

Status: ✅ PASS
Environment: Prod
OS: macOS Ventura
Browser: Chrome 116, Firefox 115, Safari 16.6
Device: MBP
Emulated Device:: N/A
Test Links:
https://en.wikipedia.org/wiki/Wikipedia:Talk_page_stalker
https://en.wikipedia.org/wiki/Wawa_(company)
https://ja.wikipedia.org/wiki/%E9%9B%A8%E6%B0%B7
https://arz.wikipedia.org/wiki/%D8%A8%D9%88%D8%A7%D8%A8%D8%A9:%D8%AA%D9%88%D9%86%D8%B3
https://en.wikipedia.org/wiki/Air_jordan_XI

With JS enabled and JS disabled check the behavior of the language button on

✅AC1: Language Box w/JS

Wiki:Talk	English Article	Different Language	RTL

✅AC2: Language Box w/o JS

Questions: When you create a new article like in https://en.wikipedia.org/wiki/Air_jordan_XI, the language button does not open. Is it supposed too or if not, should it still be there?

Different Words in Language Box between Beta (Add Links) and Prod (Edit Links) w/o JS

Prod	Beta

Questions: When you create a new article like in https://en.wikipedia.org/wiki/Air_jordan_XI, the language button does not open. Is it supposed too or if not, should it still be there?

The fix is not yet deployed on the English Wikipedia. Once it is, the drop-down will appear to allow user's to change their language settings.

Different Words in Language Box between Beta (Add Links) and Prod (Edit Links) w/o JS

I think that is because the test page on beta (https://en.wikipedia.beta.wmflabs.org/wiki/Language_test) does not have a related Wikidata entry. I created the entity on Wikidata (https://wikidata.beta.wmflabs.org/wiki/Q626663) and the link now displays "Edit links" in the dropdown.

Thanks @abi_ for the responses! Everything else looks good and I'll move it to Resolved. Thanks again!

@thiemowmde here are the issues we talked about for reference. Thanks!

Test Link: https://en.wikipedia.beta.wmflabs.org/wiki/Wikipedia_talk:Questions

Edit Links when JS is disabled is too close to the border

The Tools blue outline is too close to the text