As reported at https://zh.wikivoyage.org/wiki/Wikivoyage:%E4%BA%92%E5%8A%A9%E5%AE%A2%E6%A0%88#.E4.B8.8A.E9.9D.A2.E7.9A.84.E5.91.8A.E7.A4.BA.E6.B2.92.E6.9C.89.E8.BD.89.E6.8F.9B.E6.AD.A3.E3.80.81.E7.B0.A1.E9.AB.94.E4.B8.AD.E6.96.87 , even if the user language and user language variant are changed, sitenotice still appears to be the same:

• https://zh.wikivoyage.org/zh-hans/Special:Blankpage?zh-hans
• https://zh.wikivoyage.org/zh-hant/Special:Blankpage?zh-hant

After some research, I've found out that in https://github.com/wikimedia/mediawiki-core/blob/6f022809880ed9ae330045b76723f9d14601916e/includes/Skin.php#L1552 , $needParse partly depends on whether [[MediaWiki:Sitenotice]] was actually changed. However, language converter works within the parser, which means that even if the wikitext was the same, after parsing, the text could actually change. It is recently that the variant of the cached version changed from zh to zh-tw, and some non-hant users have found that the sitenotice became unreadable for them.

As shown in https://github.com/wikimedia/mediawiki-core/blob/6f022809880ed9ae330045b76723f9d14601916e/includes/Skin.php#L1549 , a change to $wgRenderHashAppend (which defaults to '') could re-parse the page.
And due to above issues, I propose to append the variant name $wgRenderHashAppend while processing sitenotice.

Version: 1.24rc
Severity: normal
URL: https://zh.wikivoyage.org/