Any Chinese Wiki's projects about button or input bar can not auto change to Simplified Chinese or Traditional Chinese text,
and display a long of text (source code).
as below,
https://zh.wikivoyage.org/w/index.php?oldid=90769
https://zh.wikivoyage.org/zh-cn/Wikivoyage:我的旅行/旅行札記
https://zh.wikivoyage.org/zh-cn/Wikivoyage:旅者大厅
https://zh.wikinews.org/zh-cn/Template:Start_an_article
etc...
This problem will not occur before, but why there will be such a problem today?