On xwiki.org we have a page on the main wiki xwiki:XWiki.XWikiOrgSkinExtension that is used in the subwiki's 'Administration - Page Elements' in the 'HTTP Meta Info' section.
The call is:
On the 5.2 xwiki.org version this call worked without problems and it was resolved for example in:
when called from http://commons.xwiki.org/.
Example of CSS used (xwiki:XWiki.XWikiOrgSkinExtension):
was transformed in
After the upgrade to 5.4, the call resolves to
There is a problem with the encoding.
If until now ':' resolved to '%3A', now '%' is double encoded resulting in '%253A'.
The resourse 'commons%253AColorThemes.CommonsCT' does not exists, thus xwiki:XWiki.XWikiOrgSkinExtension fallsback on the defaults (#fff)