In T228876#5361800, @A2093064 wrote:

In T228876#5361776, @RazeSoldier wrote:

Are you browsing in zh-tw content language?

Interface language: zh-Hant-TW
Content language variant: zh-Hant

The changes you made are for zh-tw content language, so you won't see any changes.

In T228876#5361847, @Yuriy_kosygin wrote:

Although we don't know why, but it seems to be back to normal, so can I close this task?

No site configuration changes, no site interface page changes, I suspect the problem caused by the gadget (javascript can modify the page title). But I did not debug it carefully.

In T228876#5362043, @RazeSoldier wrote:

The changes you made are for zh-tw content language, so you won't see any changes.

Interface message follow Interface language setting. And I use uselang=xxx to check it.

I suspect the problem caused by the gadget (javascript can modify the page title).

I don't think so. This bug still exists with safemode=1.

Reopen because I found same bug happen on zhwiki.

In T228876#5365618, @A2093064 wrote:

View https://zh.wikipedia.org/wiki/Wikipedia:%E9%A6%96%E9%A1%B5?uselang=zh-my&safemode=1 , Contributions link text is 贡献

In Special:Allmessages: https://zh.wikipedia.org/w/index.php?title=Special:Allmessages&prefix=Mycontris&filter=all&lang=zh-my
"Current message text" is 贡献. But text in https://zh.wikipedia.org/wiki/MediaWiki:Mycontris/zh-my is 我的贡献.

but I saw Contributions link text is 我的贡献 in https://zh.wikipedia.org/w/index.php?title=Special:%E6%89%80%E6%9C%89%E6%B6%88%E6%81%AF&prefix=Mycontris&filter=all&lang=zh-my&uselang=zh-my and https://zh.wikipedia.org/wiki/Wikipedia:%E9%A6%96%E9%A1%B5?uselang=zh-my&safemode=1

Same phenomenon...

I've also noticed this. Could be reproduced under Chrome 75 and on Chinese Wikipedia.

Chrome 78 per above.

Sorry... Wikivoyage also problem again, and not fixed...

T229339 also same problem?

In T228876#5387040, @Shizhao wrote:

T229339 also same problem?

Umm.... I think also problem, because I also find many MediaWiki have display problem....

MediaWiki is maybe problem, but in local is no change, who can fix it in MediaWiki?

I think this problem only appears on some wikis. In my development environment, I can't reproduce this problem.

But I using Yandex and Google Chrome browser find sidebar and search bar is problem, and many Simplified Chinese user also find same problem(Via Telegram group feedback)...

And it’s sometime good and sometime bad phenomenon.

Sidebar layouts is not the same as MediaWiki:Sidebar.

Compare sidebar in https://zh.wikivoyage.org/wiki/%E9%A6%96%E9%A1%B5?safemode=1&uselang=zh-tw and content in https://zh.wikivoyage.org/wiki/MediaWiki:Sidebar/zh-tw.

I can reproduce the problem that pagetitle wrong when I set my interface language to zh. [[MediaWiki:Pagetitle/zh]] is the default message, but this should not be the cause of the problem, because wgLanguageCode for zhwiki is zh, and [[MediaWiki:Pagetitle]] will cover [[MediaWiki:Pagetitle/zh]]. But I don't know why the coverage didn't take effect.

Umm... I have try to reproduce MediaWiki:Sidebar and MediaWiki:Pagetitle(I think include search bar name) on Wikivoyage, but no fixed successful.

Who can help reproduce the MediaWiki code?

click https://zh.wikipedia.org/wiki/Special:%E9%9A%8F%E6%9C%BA%E9%A1%B5%E9%9D%A2 (random page), click 10 times, 5 times nstab-main display as "页面", 5 times display as "条目"

In T228876#5392631, @RazeSoldier wrote:

I can reproduce the problem that pagetitle wrong when I set my interface language to zh. [[MediaWiki:Pagetitle/zh]] is the default message, but this should not be the cause of the problem, because wgLanguageCode for zhwiki is zh, and [[MediaWiki:Pagetitle]] will cover [[MediaWiki:Pagetitle/zh]]. But I don't know why the coverage didn't take effect.

This is likely due to T229992, you must have set all MediaWiki:MSG/variants to overwrite, even if it has set a fallback variant

Test Results:

• Normal page ( nstab-main display as "条目" ): x-powered-by: PHP/7.2.16-1+0~20190307202415.17+stretch~1.gbpa7be82+wmf1
• Anomalous page ( nstab-main display as "页面" ): x-powered-by: HHVM/3.18.6-dev

I have to say that MediaWiki.org also has this problem. The sidebar I saw was completely different from what I saw before. (I use zh as my interface language)

Maybe we should consider the impact of this ticket, it seems to affect multiple sites.

In T228876#5401982, @Shizhao wrote:

Test Results:

• Normal page ( nstab-main display as "条目" ): x-powered-by: PHP/7.2.16-1+0~20190307202415.17+stretch~1.gbpa7be82+wmf1
• Anomalous page ( nstab-main display as "页面" ): x-powered-by: HHVM/3.18.6-dev

This mean we using HHVM and having this error? BTW,some time Tags php7 (PHP7) will show in Tags,but some time it didn't work,like https://zh.wikipedia.org/w/index.php?title=Wikipedia:沙盒&action=history

In T228876#5407026, @Sunny00217 wrote:

In T228876#5401982, @Shizhao wrote:

Test Results:

• Normal page ( nstab-main display as "条目" ): x-powered-by: PHP/7.2.16-1+0~20190307202415.17+stretch~1.gbpa7be82+wmf1
• Anomalous page ( nstab-main display as "页面" ): x-powered-by: HHVM/3.18.6-dev

This mean we using HHVM and having this error? BTW,some time Tags php7 (PHP7) will show in Tags,but some time it didn't work,like https://zh.wikipedia.org/w/index.php?title=Wikipedia:沙盒&action=history

As I've said in T229379, this has nothing to do with hhvm/php7.

In T228876#5407580, @Antigng wrote:

In T228876#5407026, @Sunny00217 wrote:

In T228876#5401982, @Shizhao wrote:

Test Results:

• Normal page ( nstab-main display as "条目" ): x-powered-by: PHP/7.2.16-1+0~20190307202415.17+stretch~1.gbpa7be82+wmf1
• Anomalous page ( nstab-main display as "页面" ): x-powered-by: HHVM/3.18.6-dev

This mean we using HHVM and having this error? BTW,some time Tags php7 (PHP7) will show in Tags,but some time it didn't work,like https://zh.wikipedia.org/w/index.php?title=Wikipedia:沙盒&action=history

As I've said in T229379, this has nothing to do with hhvm/php7.

Than why error show on x-powered-by: HHVM/3.18.6-dev(HHVM) but not in x-powered-by: PHP/7.2.16-1+0~20190307202415.17+stretch~1.gbpa7be82+wmf1(PHP7)?

It's big trouble.... Is this a problem due to updating MediaWiki?

In T228876#5407992, @Sunny00217 wrote:

In T228876#5407580, @Antigng wrote:

In T228876#5407026, @Sunny00217 wrote:

In T228876#5401982, @Shizhao wrote:

Test Results:

• Normal page ( nstab-main display as "条目" ): x-powered-by: PHP/7.2.16-1+0~20190307202415.17+stretch~1.gbpa7be82+wmf1
• Anomalous page ( nstab-main display as "页面" ): x-powered-by: HHVM/3.18.6-dev

This mean we using HHVM and having this error? BTW,some time Tags php7 (PHP7) will show in Tags,but some time it didn't work,like https://zh.wikipedia.org/w/index.php?title=Wikipedia:沙盒&action=history

As I've said in T229379, this has nothing to do with hhvm/php7.

Than why error show on x-powered-by: HHVM/3.18.6-dev(HHVM) but not in x-powered-by: PHP/7.2.16-1+0~20190307202415.17+stretch~1.gbpa7be82+wmf1(PHP7)?

It seems that there is nothing to do with PHP engines. The randomness of the interface error has made me think of that if there is any problem in Varnish.

Is it because there is something updated in July, which will cause this problem? If so, can try to fall back to the part before July?

Before discussing when the change is causing the problem, we first need to find the time to first discover the problem. The start time for the problem may much earlier than this ticket was created.

So far, there has been no improvement. What is the progress now?

For the start, a clear description with clear steps to reproduce, expected behavior, and actual behavior, as a list of bullet-point steps, would be very welcome.
You can edit the task description by clicking Edit Task.

I have already written, this is already the problem that is currently unresolved.

And as I already wrote, we need a list of clear steps to reproduce that allow anyone else to follow that list of steps to see the problem. Thanks :)

I have update description, please help fix it, thanks.

Nobody can fix it if you do not provide clear steps that allow other people to see and reproduce a problem...
I've asked for clear steps several times here, but my requests are ignored in this task. https://www.mediawiki.org/wiki/How_to_report_a_bug

In T228876#5493016, @Aklapper wrote:

Nobody can fix it if you do not provide clear steps that allow other people to see and reproduce a problem...
I've asked for clear steps several times here, but my requests are ignored in this task. https://www.mediawiki.org/wiki/How_to_report_a_bug

Just implement anything that could be described by the following pseudocode, and you'll reproduce the problem:

do
{
     pagehtml=gethtmlbyurl("https://zh.wikipedia.org/wiki/Special:Random");
 }while (! pagehtml contains the substring "来自Wikipedia");
 print pagehtml;

Expected behavior: infinite loop, as "来自Wikipedia" is the default interface message, which should always be overridden by local settings.
Oberserved behavior: The loop terminates after a few minutes, hence the problem.

In T228876#5495989, @Antigng wrote:

In T228876#5493016, @Aklapper wrote:

Nobody can fix it if you do not provide clear steps that allow other people to see and reproduce a problem...
I've asked for clear steps several times here, but my requests are ignored in this task. https://www.mediawiki.org/wiki/How_to_report_a_bug

Just implement anything that could be described by the following pseudocode, and you'll reproduce the problem:

Implemented in python.

This problem can no longer be reproduced at Chinese Wikipedia.