The new styles for thumbnail boxes introduced in r18237 require classes which
are not present in older thumbnails.
Squid- or parser-cached pages containing the old renderings do not display
correctly with the new style sheets: the boxes are missing borders, backgrounds,
etc.
New styles should generally be backwards-compatible, showing old rendered
content in an acceptable manner.
Version: 1.9.x
Severity: normal
URL: http://en.wikipedia.org/wiki/Yakov_Bulgakov