Same problem with other browsers?
Do you know if others have experienced the same problem, by any chance?

There seem to be kk specific issues, see also bug 64452

• Bug 64452 has been marked as a duplicate of this bug. ***

Hmm user language setting seems completely ignored on content pages, even if you don't use ULS and set your language in Special:Preferences directly. When I set my user language to English, Special:Preferences speaks English, but other pages still speak kk (or one of its variant) in top-right links.

I suspect this is caused by the language converter.

Sub'ing and increasing/setting priority.

Language Team: Assessing and reducing priority is fine, just let the bug know what you think as soon as you can.

I can confirm the problem.

Browser error console only says:

TypeError: mw.beta is undefined

for
function trackClick( el, name ) {

		mw.beta.trackClick( el, 'PersonalBar', { [...] }

(In reply to Andre Klapper from comment #7)

I can confirm the problem.

Browser error console only says:

TypeError: mw.beta is undefined

for
function trackClick( el, name ) {

		mw.beta.trackClick( el, 'PersonalBar', { [...] }

Seems irrelevant. Is this for bug 63535?

[1] looks suspicious. No other language converters set $wgLanguageCode...

[1] http://git.wikimedia.org/blob/mediawiki%2Fcore.git/38d7a2abf1a94b3f637f49177a5bc7b993087229/languages%2Fclasses%2FLanguageKk.php#L302

Can we try unsetting $wgLanguageCode and see if that fixes the problem? If not we can always put it back...

(In reply to This, that and the other (TTO) from comment #10)

unsetting

i.e. removing the code that sets $wgLanguageCode

Change 172020 had a related patch set uploaded by TTO:
Don't fiddle with $wgLanguageCode in KkConverter

https://gerrit.wikimedia.org/r/172020

Change 172020 merged by jenkins-bot:
Don't fiddle with $wgLanguageCode in KkConverter

https://gerrit.wikimedia.org/r/172020

Leaving this open for now as it's not certain that the patch fixes the issue. We will be able to test on kkwiktionary on 25 November.

In T66440#706707, @TTO wrote:

Leaving this open for now as it's not certain that the patch fixes the issue. We will be able to test on kkwiktionary on 25 November.

ping :)