Last modified: 2007-07-17 20:25:11 UTC
See URL. Presumably a regression, not sure what could cause it.
I don't see any significant change inthis behavior regressing wikihiero as far back as r13167 (before the initialization changes in march 2006) or MW back to 1.4.
So not a regression, at least. :)
Fixed in r24211.
There were newlines in the HTML output from wikihiero, which interacts pretty badly with the line-based markup when it goes through the final block passes in the parser.
Replacing them with spaces seems to do the job fixing it up.